A157491 as a triangular array
| | | | | | | | | 1 |
| | | | | | | | | 0 | | 1 |
| | | | | | | | 0 | | -1 | | 2 |
| | | | | | | 0 | | 2 | | -6 | | 5 |
| | | | | | 0 | | -5 | | 20 | | -28 | | 14 |
| | | | | 0 | | 14 | | -70 | | 135 | | -120 | | 42 |
| | | | 0 | | -42 | | 252 | | -616 | | 770 | | -495 | | 132 |
| | | 0 | | 132 | | -924 | | 2730 | | -4368 | | 4004 | | -2002 | | 429 |
| | 0 | | -429 | | 3432 | | -11880 | | 23100 | | -27300 | | 19656 | | -8008 | | 1430 |
|
A157491 as a square array
1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0
| 1 | -1 | 2 | -5 | 14 | -42 | 132 | -429
| 2 | -6 | 20 | -70 | 252 | -924 | 3432
| 5 | -28 | 135 | -616 | 2730 | -11880
| 14 | -120 | 770 | -4368 | 23100
| 42 | -495 | 4004 | -27300
| 132 | -2002 | 19656
| 429 | -8008
| 1430
|
A157491 as an upper right triangle
1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0
| | 1 | -1 | 2 | -5 | 14 | -42 | 132 | -429
| | | 2 | -6 | 20 | -70 | 252 | -924 | 3432
| | | | 5 | -28 | 135 | -616 | 2730 | -11880
| | | | | 14 | -120 | 770 | -4368 | 23100
| | | | | | 42 | -495 | 4004 | -27300
| | | | | | | 132 | -2002 | 19656
| | | | | | | | 429 | -8008
| | | | | | | | | 1430
|
|