A108886 - OEIS

A108886 as a triangular array

1

1 1

1 2 1

1 1 3 1

1 1 3 4 1

1 1 5 2 5 1

1 1 1 20 5 6 1

1 1 1 35 35 3 7 1

1 1 1 1 1 28 7 8 1

1 1 1 1 9 63 42 4 9 1

1 1 1 1 15 42 35 120 9 10 1

1 1 1 1 1 231 11 66 55 5 11 1

1 1 1 1 1 396 231 72 45 55 11 12 1

1 1

1 1 1 1 1 1 1 1 1 1 1 1 1 1

1 2 1 1 1 1 1 1 1 1 1 1 1

1 3 3 5 1 1 1 1 1 1 1

1 4 2 20 35 1 1 1 1 1

1 5 5 35 1 9 15 1 1

1 6 3 28 63 42 231 396

1 7 7 42 35 11 231

1 8 4 120 66 72

1 9 9 55 45

1 10 5 55

1 11 11

1 12

1