Структура операторных моноидов

1: --- 1
1

2: --- 4
1 2 1

3: --- 27
.......1
....3....3
........6
..3.........3
1...3...3...1

4: --- 256
1....4....6....4....1
4..16..24..16....4
6..24..36..24....6
4..16..24..16....4
1....4....6....4....1