A049218 formatted as a triangular array:
| | | | | | | | | | 1 | | | | | | | | | | |
| | | | | | | | | 0 | | 1 | | | | | | | | | |
| | | | | | | | -2 | | 0 | | 1 | | | | | | | | |
| | | | | | | 0 | | -8 | | 0 | | 1 | | | | | | | |
| | | | | | 24 | | 0 | | -20 | | 0 | | 1 | | | | | | |
| | | | | 0 | | 184 | | 0 | | -40 | | 0 | | 1 | | | | | |
| | | | -720 | | 0 | | 784 | | 0 | | -70 | | 0 | | 1 | | | | |
| | | 0 | | -8448 | | 0 | | 2464 | | 0 | | -112 | | 0 | | 1 | | | |
| | 40320 | | 0 | | -52352 | | 0 | | 6384 | | 0 | | -168 | | 0 | | 1 | | |
| 0 | | 648576 | | 0 | | -229760 | | 0 | | 14448 | | 0 | | -240 | | 0 | | 1 | |
| -3628800 | | 0 | | 5360256 | | 0 | | -804320 | | 0 | | 29568 | | 0 | | -330 | | 0 | | 1 |
A049218 formatted as a square array:
| 1 | 0 | -2 | 0 | 24 | 0 | -720 | 0 | 40320 | 0 | -3628800 |
| 1 | 0 | -8 | 0 | 184 | 0 | -8448 | 0 | 648576 | 0 | |
| 1 | 0 | -20 | 0 | 784 | 0 | -52352 | 0 | 5360256 | | |
| 1 | 0 | -40 | 0 | 2464 | 0 | -229760 | 0 | | | |
| 1 | 0 | -70 | 0 | 6384 | 0 | -804320 | | | | |
| 1 | 0 | -112 | 0 | 14448 | 0 | | | | | |
| 1 | 0 | -168 | 0 | 29568 | | | | | | |
| 1 | 0 | -240 | 0 | | | | | | | |
| 1 | 0 | -330 | | | | | | | | |
| 1 | 0 | | | | | | | | | |
| 1 | | | | | | | | | | |
A049218 formatted as an upper right triangle:
| 1 | 0 | -2 | 0 | 24 | 0 | -720 | 0 | 40320 | 0 | -3628800 |
| 1 | 0 | -8 | 0 | 184 | 0 | -8448 | 0 | 648576 | 0 |
| | 1 | 0 | -20 | 0 | 784 | 0 | -52352 | 0 | 5360256 |
| | | 1 | 0 | -40 | 0 | 2464 | 0 | -229760 | 0 |
| | | | 1 | 0 | -70 | 0 | 6384 | 0 | -804320 |
| | | | | 1 | 0 | -112 | 0 | 14448 | 0 |
| | | | | | 1 | 0 | -168 | 0 | 29568 |
| | | | | | | 1 | 0 | -240 | 0 |
| | | | | | | | 1 | 0 | -330 |
| | | | | | | | | 1 | 0 |
| | | | | | | | | | 1 |
|