A231137 as a triangular array
| | | | | | | | | 1 |
| | | | | | | | | 2 | | 2 |
| | | | | | | | 6 | | 9 | | 6 |
| | | | | | | 16 | | 40 | | 40 | | 16 |
| | | | | | 44 | | 182 | | 308 | | 182 | | 44 |
| | | | | 120 | | 808 | | 2260 | | 2260 | | 808 | | 120 |
| | | | 328 | | 3688 | | 16812 | | 27171 | | 16812 | | 3688 | | 328 |
| | | 896 | | 16368 | | 124644 | | 336004 | | 336004 | | 124644 | | 16368 | | 896 |
| | 2448 | | 74728 | | 924900 | | 4066129 | | 6794904 | | 4066129 | | 924900 | | 74728 | | 2448 |
|
A231137 as a square array
1 | 2 | 6 | 16 | 44 | 120 | 328 | 896 | 2448
| 2 | 9 | 40 | 182 | 808 | 3688 | 16368 | 74728
| 6 | 40 | 308 | 2260 | 16812 | 124644 | 924900
| 16 | 182 | 2260 | 27171 | 336004 | 4066129
| 44 | 808 | 16812 | 336004 | 6794904
| 120 | 3688 | 124644 | 4066129
| 328 | 16368 | 924900
| 896 | 74728
| 2448
|
A231137 as an upper right triangle
1 | 2 | 6 | 16 | 44 | 120 | 328 | 896 | 2448
| | 2 | 9 | 40 | 182 | 808 | 3688 | 16368 | 74728
| | | 6 | 40 | 308 | 2260 | 16812 | 124644 | 924900
| | | | 16 | 182 | 2260 | 27171 | 336004 | 4066129
| | | | | 44 | 808 | 16812 | 336004 | 6794904
| | | | | | 120 | 3688 | 124644 | 4066129
| | | | | | | 328 | 16368 | 924900
| | | | | | | | 896 | 74728
| | | | | | | | | 2448
|
|