A255740 - OEIS

A255740 as a triangular array

1

1 0

1 1 0

1 2 1 0

1 3 2 0 0

1 4 3 2 1 0

1 5 4 6 2 0 0

1 6 5 12 3 2 0 0

1 7 6 20 4 6 2 0 0

1 8 7 30 5 12 6 2 1 0

1 9 8 42 6 20 12 12 2 0 0

1 10 9 56 7 30 20 36 3 2 0 0

1 11 10 72 8 42 30 80 4 6 2 0 0

1 12 11 90 9 56 42 150 5 12 6 2 0 0

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

0 1 2 3 4 5 6 7 8 9 10 11 12

0 1 2 3 4 5 6 7 8 9 10 11

0 0 2 6 12 20 30 42 56 72 90

0 1 2 3 4 5 6 7 8 9

0 0 2 6 12 20 30 42 56

0 0 2 6 12 20 30 42

0 0 2 12 36 80 150

0 1 2 3 4 5

0 0 2 6 12

0 0 2 6

0 0 2

0 0

0