A099731 formatted as a triangular array:
| | | | | | | | 1 | | | | | | | | |
| | | | | | | 1 | | -1 | | | | | | | |
| | | | | | 1 | | -5 | | 10 | | | | | | |
| | | | | 1 | | -12 | | 59 | | -90 | | | | | |
| | | | 1 | | -22 | | 203 | | -830 | | 1320 | | | | |
| | | 1 | | -35 | | 525 | | -3985 | | 15374 | | -23640 | | | |
| | 1 | | -51 | | 1135 | | -13665 | | 93544 | | -342324 | | 523440 | | |
| 1 | | -70 | | 2170 | | -37870 | | 399889 | | -2542540 | | 8997540 | | -13633200 | |
| 1 | | -92 | | 3794 | | -90440 | | 1356929 | | -13076588 | | 78896236 | | -271996080 | | 409852800 |
A099731 formatted as a square array:
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| -1 | -5 | -12 | -22 | -35 | -51 | -70 | -92 | |
| 10 | 59 | 203 | 525 | 1135 | 2170 | 3794 | | |
| -90 | -830 | -3985 | -13665 | -37870 | -90440 | | | |
| 1320 | 15374 | 93544 | 399889 | 1356929 | | | | |
| -23640 | -342324 | -2542540 | -13076588 | | | | | |
| 523440 | 8997540 | 78896236 | | | | | | |
| -13633200 | -271996080 | | | | | | | |
| 409852800 | | | | | | | | |
A099731 formatted as an upper right triangle:
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| -1 | -5 | -12 | -22 | -35 | -51 | -70 | -92 |
| | 10 | 59 | 203 | 525 | 1135 | 2170 | 3794 |
| | | -90 | -830 | -3985 | -13665 | -37870 | -90440 |
| | | | 1320 | 15374 | 93544 | 399889 | 1356929 |
| | | | | -23640 | -342324 | -2542540 | -13076588 |
| | | | | | 523440 | 8997540 | 78896236 |
| | | | | | | -13633200 | -271996080 |
| | | | | | | | 409852800 |
|
