Nodes of the tree are printed as m-e, that is:
take m times Boolean algebras of cardinality 2^e.
-----------------------------------------
Shapes of L-IBSLs of cardinality  18 :
This tree:
18-0
generates 1 L-IBSL.

This tree:
1-1
└── 16-0
generates 1 L-IBSL.

This tree:
2-1
└── 14-0
generates 1 L-IBSL.

This tree:
3-1
└── 12-0
generates 1 L-IBSL.

This tree:
4-1
└── 10-0
generates 1 L-IBSL.

This tree:
5-1
└── 8-0
generates 1 L-IBSL.

This tree:
6-1
└── 6-0
generates 1 L-IBSL.

This tree:
7-1
└── 4-0
generates 1 L-IBSL.

This tree:
8-1
└── 2-0
generates 1 L-IBSL.

This tree:
9-1
generates 1 L-IBSL.

This tree:
1-2
├── 14-0
├── 1-1
│   └── 12-0
├── 2-1
│   └── 10-0
├── 3-1
│   └── 8-0
├── 4-1
│   └── 6-0
├── 5-1
│   └── 4-0
├── 6-1
│   └── 2-0
└── 7-1
generates the following exponents' sequences:
[[2], [1, 2], [1, 1, 2], [1, 1, 1, 2], [1, 1, 1, 1, 2], [1, 1, 1, 1, 1, 2], [1, 1, 1, 1, 1, 1, 2], [1, 1, 1, 1, 1, 1, 1, 2]]
This permutation: [2]
generates  1 L-IBSLs.

This permutation: [1, 2]
generates  1 L-IBSLs.

This permutation: [2, 1]
generates  1 L-IBSLs.

This permutation: [1, 1, 2]
generates  1 L-IBSLs.

This permutation: [1, 2, 1]
generates  1 L-IBSLs.

This permutation: [2, 1, 1]
generates  1 L-IBSLs.

This permutation: [1, 1, 1, 2]
generates  1 L-IBSLs.

This permutation: [1, 1, 2, 1]
generates  1 L-IBSLs.

This permutation: [1, 2, 1, 1]
generates  1 L-IBSLs.

This permutation: [2, 1, 1, 1]
generates  1 L-IBSLs.

This permutation: [1, 1, 1, 1, 2]
generates  1 L-IBSLs.

This permutation: [1, 1, 1, 2, 1]
generates  1 L-IBSLs.

This permutation: [1, 1, 2, 1, 1]
generates  1 L-IBSLs.

This permutation: [1, 2, 1, 1, 1]
generates  1 L-IBSLs.

This permutation: [2, 1, 1, 1, 1]
generates  1 L-IBSLs.

This permutation: [1, 1, 1, 1, 1, 2]
generates  1 L-IBSLs.

This permutation: [1, 1, 1, 1, 2, 1]
generates  1 L-IBSLs.

This permutation: [1, 1, 1, 2, 1, 1]
generates  1 L-IBSLs.

This permutation: [1, 1, 2, 1, 1, 1]
generates  1 L-IBSLs.

This permutation: [1, 2, 1, 1, 1, 1]
generates  1 L-IBSLs.

This permutation: [2, 1, 1, 1, 1, 1]
generates  1 L-IBSLs.

This permutation: [1, 1, 1, 1, 1, 1, 2]
generates  1 L-IBSLs.

This permutation: [1, 1, 1, 1, 1, 2, 1]
generates  1 L-IBSLs.

This permutation: [1, 1, 1, 1, 2, 1, 1]
generates  1 L-IBSLs.

This permutation: [1, 1, 1, 2, 1, 1, 1]
generates  1 L-IBSLs.

This permutation: [1, 1, 2, 1, 1, 1, 1]
generates  1 L-IBSLs.

This permutation: [1, 2, 1, 1, 1, 1, 1]
generates  1 L-IBSLs.

This permutation: [2, 1, 1, 1, 1, 1, 1]
generates  1 L-IBSLs.

This permutation: [1, 1, 1, 1, 1, 1, 1, 2]
generates  1 L-IBSLs.

This permutation: [1, 1, 1, 1, 1, 1, 2, 1]
generates  1 L-IBSLs.

This permutation: [1, 1, 1, 1, 1, 2, 1, 1]
generates  1 L-IBSLs.

This permutation: [1, 1, 1, 1, 2, 1, 1, 1]
generates  1 L-IBSLs.

This permutation: [1, 1, 1, 2, 1, 1, 1, 1]
generates  1 L-IBSLs.

This permutation: [1, 1, 2, 1, 1, 1, 1, 1]
generates  1 L-IBSLs.

This permutation: [1, 2, 1, 1, 1, 1, 1, 1]
generates  1 L-IBSLs.

This permutation: [2, 1, 1, 1, 1, 1, 1, 1]
generates  1 L-IBSLs.

This tree:
2-2
├── 10-0
├── 1-1
│   └── 8-0
├── 2-1
│   └── 6-0
├── 3-1
│   └── 4-0
├── 4-1
│   └── 2-0
└── 5-1
generates the following exponents' sequences:
[[2, 2], [1, 2, 2], [1, 1, 2, 2], [1, 1, 1, 2, 2], [1, 1, 1, 1, 2, 2], [1, 1, 1, 1, 1, 2, 2]]
This permutation: [2, 2]
generates  2 L-IBSLs.

This permutation: [1, 2, 2]
generates  2 L-IBSLs.

This permutation: [2, 1, 2]
generates  1 L-IBSLs.

This permutation: [2, 2, 1]
generates  2 L-IBSLs.

This permutation: [1, 1, 2, 2]
generates  2 L-IBSLs.

This permutation: [1, 2, 1, 2]
generates  1 L-IBSLs.

This permutation: [1, 2, 2, 1]
generates  2 L-IBSLs.

This permutation: [2, 1, 1, 2]
generates  1 L-IBSLs.

This permutation: [2, 1, 2, 1]
generates  1 L-IBSLs.

This permutation: [2, 2, 1, 1]
generates  2 L-IBSLs.

This permutation: [1, 1, 1, 2, 2]
generates  2 L-IBSLs.

This permutation: [1, 1, 2, 1, 2]
generates  1 L-IBSLs.

This permutation: [1, 1, 2, 2, 1]
generates  2 L-IBSLs.

This permutation: [1, 2, 1, 1, 2]
generates  1 L-IBSLs.

This permutation: [1, 2, 1, 2, 1]
generates  1 L-IBSLs.

This permutation: [1, 2, 2, 1, 1]
generates  2 L-IBSLs.

This permutation: [2, 1, 1, 1, 2]
generates  1 L-IBSLs.

This permutation: [2, 1, 1, 2, 1]
generates  1 L-IBSLs.

This permutation: [2, 1, 2, 1, 1]
generates  1 L-IBSLs.

This permutation: [2, 2, 1, 1, 1]
generates  2 L-IBSLs.

This permutation: [1, 1, 1, 1, 2, 2]
generates  2 L-IBSLs.

This permutation: [1, 1, 1, 2, 1, 2]
generates  1 L-IBSLs.

This permutation: [1, 1, 1, 2, 2, 1]
generates  2 L-IBSLs.

This permutation: [1, 1, 2, 1, 1, 2]
generates  1 L-IBSLs.

This permutation: [1, 1, 2, 1, 2, 1]
generates  1 L-IBSLs.

This permutation: [1, 1, 2, 2, 1, 1]
generates  2 L-IBSLs.

This permutation: [1, 2, 1, 1, 1, 2]
generates  1 L-IBSLs.

This permutation: [1, 2, 1, 1, 2, 1]
generates  1 L-IBSLs.

This permutation: [1, 2, 1, 2, 1, 1]
generates  1 L-IBSLs.

This permutation: [1, 2, 2, 1, 1, 1]
generates  2 L-IBSLs.

This permutation: [2, 1, 1, 1, 1, 2]
generates  1 L-IBSLs.

This permutation: [2, 1, 1, 1, 2, 1]
generates  1 L-IBSLs.

This permutation: [2, 1, 1, 2, 1, 1]
generates  1 L-IBSLs.

This permutation: [2, 1, 2, 1, 1, 1]
generates  1 L-IBSLs.

This permutation: [2, 2, 1, 1, 1, 1]
generates  2 L-IBSLs.

This permutation: [1, 1, 1, 1, 1, 2, 2]
generates  2 L-IBSLs.

This permutation: [1, 1, 1, 1, 2, 1, 2]
generates  1 L-IBSLs.

This permutation: [1, 1, 1, 1, 2, 2, 1]
generates  2 L-IBSLs.

This permutation: [1, 1, 1, 2, 1, 1, 2]
generates  1 L-IBSLs.

This permutation: [1, 1, 1, 2, 1, 2, 1]
generates  1 L-IBSLs.

This permutation: [1, 1, 1, 2, 2, 1, 1]
generates  2 L-IBSLs.

This permutation: [1, 1, 2, 1, 1, 1, 2]
generates  1 L-IBSLs.

This permutation: [1, 1, 2, 1, 1, 2, 1]
generates  1 L-IBSLs.

This permutation: [1, 1, 2, 1, 2, 1, 1]
generates  1 L-IBSLs.

This permutation: [1, 1, 2, 2, 1, 1, 1]
generates  2 L-IBSLs.

This permutation: [1, 2, 1, 1, 1, 1, 2]
generates  1 L-IBSLs.

This permutation: [1, 2, 1, 1, 1, 2, 1]
generates  1 L-IBSLs.

This permutation: [1, 2, 1, 1, 2, 1, 1]
generates  1 L-IBSLs.

This permutation: [1, 2, 1, 2, 1, 1, 1]
generates  1 L-IBSLs.

This permutation: [1, 2, 2, 1, 1, 1, 1]
generates  2 L-IBSLs.

This permutation: [2, 1, 1, 1, 1, 1, 2]
generates  1 L-IBSLs.

This permutation: [2, 1, 1, 1, 1, 2, 1]
generates  1 L-IBSLs.

This permutation: [2, 1, 1, 1, 2, 1, 1]
generates  1 L-IBSLs.

This permutation: [2, 1, 1, 2, 1, 1, 1]
generates  1 L-IBSLs.

This permutation: [2, 1, 2, 1, 1, 1, 1]
generates  1 L-IBSLs.

This permutation: [2, 2, 1, 1, 1, 1, 1]
generates  2 L-IBSLs.

This tree:
3-2
├── 6-0
├── 1-1
│   └── 4-0
├── 2-1
│   └── 2-0
└── 3-1
generates the following exponents' sequences:
[[2, 2, 2], [1, 2, 2, 2], [1, 1, 2, 2, 2], [1, 1, 1, 2, 2, 2]]
This permutation: [2, 2, 2]
generates  4 L-IBSLs.

This permutation: [1, 2, 2, 2]
generates  4 L-IBSLs.

This permutation: [2, 1, 2, 2]
generates  2 L-IBSLs.

This permutation: [2, 2, 1, 2]
generates  2 L-IBSLs.

This permutation: [2, 2, 2, 1]
generates  4 L-IBSLs.

This permutation: [1, 1, 2, 2, 2]
generates  4 L-IBSLs.

This permutation: [1, 2, 1, 2, 2]
generates  2 L-IBSLs.

This permutation: [1, 2, 2, 1, 2]
generates  2 L-IBSLs.

This permutation: [1, 2, 2, 2, 1]
generates  4 L-IBSLs.

This permutation: [2, 1, 1, 2, 2]
generates  2 L-IBSLs.

This permutation: [2, 1, 2, 1, 2]
generates  1 L-IBSLs.

This permutation: [2, 1, 2, 2, 1]
generates  2 L-IBSLs.

This permutation: [2, 2, 1, 1, 2]
generates  2 L-IBSLs.

This permutation: [2, 2, 1, 2, 1]
generates  2 L-IBSLs.

This permutation: [2, 2, 2, 1, 1]
generates  4 L-IBSLs.

This permutation: [1, 1, 1, 2, 2, 2]
generates  4 L-IBSLs.

This permutation: [1, 1, 2, 1, 2, 2]
generates  2 L-IBSLs.

This permutation: [1, 1, 2, 2, 1, 2]
generates  2 L-IBSLs.

This permutation: [1, 1, 2, 2, 2, 1]
generates  4 L-IBSLs.

This permutation: [1, 2, 1, 1, 2, 2]
generates  2 L-IBSLs.

This permutation: [1, 2, 1, 2, 1, 2]
generates  1 L-IBSLs.

This permutation: [1, 2, 1, 2, 2, 1]
generates  2 L-IBSLs.

This permutation: [1, 2, 2, 1, 1, 2]
generates  2 L-IBSLs.

This permutation: [1, 2, 2, 1, 2, 1]
generates  2 L-IBSLs.

This permutation: [1, 2, 2, 2, 1, 1]
generates  4 L-IBSLs.

This permutation: [2, 1, 1, 1, 2, 2]
generates  2 L-IBSLs.

This permutation: [2, 1, 1, 2, 1, 2]
generates  1 L-IBSLs.

This permutation: [2, 1, 1, 2, 2, 1]
generates  2 L-IBSLs.

This permutation: [2, 1, 2, 1, 1, 2]
generates  1 L-IBSLs.

This permutation: [2, 1, 2, 1, 2, 1]
generates  1 L-IBSLs.

This permutation: [2, 1, 2, 2, 1, 1]
generates  2 L-IBSLs.

This permutation: [2, 2, 1, 1, 1, 2]
generates  2 L-IBSLs.

This permutation: [2, 2, 1, 1, 2, 1]
generates  2 L-IBSLs.

This permutation: [2, 2, 1, 2, 1, 1]
generates  2 L-IBSLs.

This permutation: [2, 2, 2, 1, 1, 1]
generates  4 L-IBSLs.

This tree:
4-2
├── 2-0
└── 1-1
generates the following exponents' sequences:
[[2, 2, 2, 2], [1, 2, 2, 2, 2]]
This permutation: [2, 2, 2, 2]
generates  8 L-IBSLs.

This permutation: [1, 2, 2, 2, 2]
generates  8 L-IBSLs.

This permutation: [2, 1, 2, 2, 2]
generates  4 L-IBSLs.

This permutation: [2, 2, 1, 2, 2]
generates  4 L-IBSLs.

This permutation: [2, 2, 2, 1, 2]
generates  4 L-IBSLs.

This permutation: [2, 2, 2, 2, 1]
generates  8 L-IBSLs.

This tree:
1-3
├── 10-0
├── 1-1
│   └── 8-0
├── 2-1
│   └── 6-0
├── 3-1
│   └── 4-0
├── 4-1
│   └── 2-0
├── 5-1
├── 1-2
│   ├── 6-0
│   ├── 1-1
│   │   └── 4-0
│   ├── 2-1
│   │   └── 2-0
│   └── 3-1
└── 2-2
    ├── 2-0
    └── 1-1
generates the following exponents' sequences:
[[3], [1, 3], [1, 1, 3], [1, 1, 1, 3], [1, 1, 1, 1, 3], [1, 1, 1, 1, 1, 3], [2, 3], [1, 2, 3], [1, 1, 2, 3], [1, 1, 1, 2, 3], [2, 2, 3], [1, 2, 2, 3]]
This permutation: [3]
generates  1 L-IBSLs.

This permutation: [1, 3]
generates  1 L-IBSLs.

This permutation: [3, 1]
generates  1 L-IBSLs.

This permutation: [1, 1, 3]
generates  1 L-IBSLs.

This permutation: [1, 3, 1]
generates  1 L-IBSLs.

This permutation: [3, 1, 1]
generates  1 L-IBSLs.

This permutation: [1, 1, 1, 3]
generates  1 L-IBSLs.

This permutation: [1, 1, 3, 1]
generates  1 L-IBSLs.

This permutation: [1, 3, 1, 1]
generates  1 L-IBSLs.

This permutation: [3, 1, 1, 1]
generates  1 L-IBSLs.

This permutation: [1, 1, 1, 1, 3]
generates  1 L-IBSLs.

This permutation: [1, 1, 1, 3, 1]
generates  1 L-IBSLs.

This permutation: [1, 1, 3, 1, 1]
generates  1 L-IBSLs.

This permutation: [1, 3, 1, 1, 1]
generates  1 L-IBSLs.

This permutation: [3, 1, 1, 1, 1]
generates  1 L-IBSLs.

This permutation: [1, 1, 1, 1, 1, 3]
generates  1 L-IBSLs.

This permutation: [1, 1, 1, 1, 3, 1]
generates  1 L-IBSLs.

This permutation: [1, 1, 1, 3, 1, 1]
generates  1 L-IBSLs.

This permutation: [1, 1, 3, 1, 1, 1]
generates  1 L-IBSLs.

This permutation: [1, 3, 1, 1, 1, 1]
generates  1 L-IBSLs.

This permutation: [3, 1, 1, 1, 1, 1]
generates  1 L-IBSLs.

This permutation: [2, 3]
generates  2 L-IBSLs.

This permutation: [3, 2]
generates  2 L-IBSLs.

This permutation: [1, 2, 3]
generates  2 L-IBSLs.

This permutation: [1, 3, 2]
generates  2 L-IBSLs.

This permutation: [2, 1, 3]
generates  1 L-IBSLs.

This permutation: [2, 3, 1]
generates  2 L-IBSLs.

This permutation: [3, 1, 2]
generates  1 L-IBSLs.

This permutation: [3, 2, 1]
generates  2 L-IBSLs.

This permutation: [1, 1, 2, 3]
generates  2 L-IBSLs.

This permutation: [1, 1, 3, 2]
generates  2 L-IBSLs.

This permutation: [1, 2, 1, 3]
generates  1 L-IBSLs.

This permutation: [1, 2, 3, 1]
generates  2 L-IBSLs.

This permutation: [1, 3, 1, 2]
generates  1 L-IBSLs.

This permutation: [1, 3, 2, 1]
generates  2 L-IBSLs.

This permutation: [2, 1, 1, 3]
generates  1 L-IBSLs.

This permutation: [2, 1, 3, 1]
generates  1 L-IBSLs.

This permutation: [2, 3, 1, 1]
generates  2 L-IBSLs.

This permutation: [3, 1, 1, 2]
generates  1 L-IBSLs.

This permutation: [3, 1, 2, 1]
generates  1 L-IBSLs.

This permutation: [3, 2, 1, 1]
generates  2 L-IBSLs.

This permutation: [1, 1, 1, 2, 3]
generates  2 L-IBSLs.

This permutation: [1, 1, 1, 3, 2]
generates  2 L-IBSLs.

This permutation: [1, 1, 2, 1, 3]
generates  1 L-IBSLs.

This permutation: [1, 1, 2, 3, 1]
generates  2 L-IBSLs.

This permutation: [1, 1, 3, 1, 2]
generates  1 L-IBSLs.

This permutation: [1, 1, 3, 2, 1]
generates  2 L-IBSLs.

This permutation: [1, 2, 1, 1, 3]
generates  1 L-IBSLs.

This permutation: [1, 2, 1, 3, 1]
generates  1 L-IBSLs.

This permutation: [1, 2, 3, 1, 1]
generates  2 L-IBSLs.

This permutation: [1, 3, 1, 1, 2]
generates  1 L-IBSLs.

This permutation: [1, 3, 1, 2, 1]
generates  1 L-IBSLs.

This permutation: [1, 3, 2, 1, 1]
generates  2 L-IBSLs.

This permutation: [2, 1, 1, 1, 3]
generates  1 L-IBSLs.

This permutation: [2, 1, 1, 3, 1]
generates  1 L-IBSLs.

This permutation: [2, 1, 3, 1, 1]
generates  1 L-IBSLs.

This permutation: [2, 3, 1, 1, 1]
generates  2 L-IBSLs.

This permutation: [3, 1, 1, 1, 2]
generates  1 L-IBSLs.

This permutation: [3, 1, 1, 2, 1]
generates  1 L-IBSLs.

This permutation: [3, 1, 2, 1, 1]
generates  1 L-IBSLs.

This permutation: [3, 2, 1, 1, 1]
generates  2 L-IBSLs.

This permutation: [2, 2, 3]
generates  4 L-IBSLs.

This permutation: [2, 3, 2]
generates  4 L-IBSLs.

This permutation: [3, 2, 2]
generates  4 L-IBSLs.

This permutation: [1, 2, 2, 3]
generates  4 L-IBSLs.

This permutation: [1, 2, 3, 2]
generates  4 L-IBSLs.

This permutation: [1, 3, 2, 2]
generates  4 L-IBSLs.

This permutation: [2, 1, 2, 3]
generates  2 L-IBSLs.

This permutation: [2, 1, 3, 2]
generates  2 L-IBSLs.

This permutation: [2, 2, 1, 3]
generates  2 L-IBSLs.

This permutation: [2, 2, 3, 1]
generates  4 L-IBSLs.

This permutation: [2, 3, 1, 2]
generates  2 L-IBSLs.

This permutation: [2, 3, 2, 1]
generates  4 L-IBSLs.

This permutation: [3, 1, 2, 2]
generates  2 L-IBSLs.

This permutation: [3, 2, 1, 2]
generates  2 L-IBSLs.

This permutation: [3, 2, 2, 1]
generates  4 L-IBSLs.

This tree:
2-3
├── 2-0
└── 1-1
generates the following exponents' sequences:
[[3, 3], [1, 3, 3]]
This permutation: [3, 3]
generates  3 L-IBSLs.

This permutation: [1, 3, 3]
generates  3 L-IBSLs.

This permutation: [3, 1, 3]
generates  1 L-IBSLs.

This permutation: [3, 3, 1]
generates  3 L-IBSLs.

This tree:
1-4
├── 2-0
└── 1-1
generates the following exponents' sequences:
[[4], [1, 4]]
This permutation: [4]
generates  1 L-IBSLs.

This permutation: [1, 4]
generates  1 L-IBSLs.

This permutation: [4, 1]
generates  1 L-IBSLs.

There are  386  L-IBSLs of cardinality  18
-----------------------------------------

