A178515 - OEIS

A178515 as a triangular array

1

2 0

4 0 0

9 1 0 0

21 5 0 0 0

51 25 0 0 0 0

127 105 0 0 0 0 0

323 420 21 0 0 0 0 0

835 1596 189 0 0 0 0 0 0

2188 5880 1428 0 0 0 0 0 0 0

5798 21120 8778 0 0 0 0 0 0 0 0

15511 74415 48741 1485 0 0 0 0 0 0 0 0

41835 258115 249249 19305 0

1 2 4 9 21 51 127 323 835 2188 5798 15511 41835

0 0 1 5 25 105 420 1596 5880 21120 74415 258115

0 0 0 0 0 21 189 1428 8778 48741 249249

0 0 0 0 0 0 0 0 1485 19305

0 0 0 0 0 0 0 0 0

0 0 0 0 0 0 0

0 0 0 0 0 0

0 0 0 0 0

0 0 0 0

0 0 0

0 0

0