A087903 formatted as a triangular array:
| | | | | | | | | 1 | | | | | | | | | |
| | | | | | | | 1 | | 1 | | | | | | | | |
| | | | | | | 1 | | 4 | | 1 | | | | | | | |
| | | | | | 1 | | 11 | | 9 | | 1 | | | | | | |
| | | | | 1 | | 26 | | 48 | | 16 | | 1 | | | | | |
| | | | 1 | | 57 | | 202 | | 140 | | 25 | | 1 | | | | |
| | | 1 | | 120 | | 747 | | 916 | | 325 | | 36 | | 1 | | | |
| | 1 | | 247 | | 2559 | | 5071 | | 3045 | | 651 | | 49 | | 1 | | |
| 1 | | 502 | | 8362 | | 25300 | | 23480 | | 8260 | | 1176 | | 64 | | 1 | |
| 1 | | 1013 | | 26520 | | 117962 | | 159736 | | 84456 | | 19404 | | 1968 | | 81 | | 1 |
A087903 formatted as a square array:
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| 1 | 4 | 11 | 26 | 57 | 120 | 247 | 502 | 1013 | |
| 1 | 9 | 48 | 202 | 747 | 2559 | 8362 | 26520 | | |
| 1 | 16 | 140 | 916 | 5071 | 25300 | 117962 | | | |
| 1 | 25 | 325 | 3045 | 23480 | 159736 | | | | |
| 1 | 36 | 651 | 8260 | 84456 | | | | | |
| 1 | 49 | 1176 | 19404 | | | | | | |
| 1 | 64 | 1968 | | | | | | | |
| 1 | 81 | | | | | | | | |
| 1 | | | | | | | | | |
A087903 formatted as an upper right triangle:
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| 1 | 4 | 11 | 26 | 57 | 120 | 247 | 502 | 1013 |
| | 1 | 9 | 48 | 202 | 747 | 2559 | 8362 | 26520 |
| | | 1 | 16 | 140 | 916 | 5071 | 25300 | 117962 |
| | | | 1 | 25 | 325 | 3045 | 23480 | 159736 |
| | | | | 1 | 36 | 651 | 8260 | 84456 |
| | | | | | 1 | 49 | 1176 | 19404 |
| | | | | | | 1 | 64 | 1968 |
| | | | | | | | 1 | 81 |
| | | | | | | | | 1 |
|
