A212138 - OEIS

A212138 as a triangular array

1

2 0

3 0 1

4 0 2 0

5 0 4 0 1

6 0 6 2 2 0

7 0 9 4 5 0 1

8 0 12 8 10 2 2 0

9 0 16 14 18 8 6 0 1

10 0 20 22 32 20 14 4 2 0

11 0 25 32 52 42 34 14 7 0 1

12 0 30 46 80 80 72 42 22 4 2 0

13 0 36 62 119 1

1 2 3 4 5 6 7 8 9 10 11 12 13

0 0 0 0 0 0 0 0 0 0 0 0

1 2 4 6 9 12 16 20 25 30 36

0 0 2 4 8 14 22 32 46 62

1 2 5 10 18 32 52 80 119

0 0 2 8 20 42 80 1

1 2 6 14 34 72

0 0 4 14 42

1 2 7 22

0 0 4

1 2

0