A157403 formatted as a triangular array:
| | | | | | | 1 | | | | | | | |
| | | | | | 1 | | 3 | | | | | | |
| | | | | 1 | | 9 | | 21 | | | | | |
| | | | 1 | | 45 | | 84 | | 231 | | | | |
| | | 1 | | 165 | | 840 | | 1155 | | 3465 | | | |
| | 1 | | 855 | | 8610 | | 13860 | | 20790 | | 65835 | | |
| 1 | | 3843 | | 64680 | | 250635 | | 291060 | | 460845 | | 1514205 | |
| 1 | | 21819 | | 689136 | | 3969735 | | 6015240 | | 7373520 | | 12113640 | | 40883535 |
A157403 formatted as a square array:
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| 3 | 9 | 45 | 165 | 855 | 3843 | 21819 | |
| 21 | 84 | 840 | 8610 | 64680 | 689136 | | |
| 231 | 1155 | 13860 | 250635 | 3969735 | | | |
| 3465 | 20790 | 291060 | 6015240 | | | | |
| 65835 | 460845 | 7373520 | | | | | |
| 1514205 | 12113640 | | | | | | |
| 40883535 | | | | | | | |
A157403 formatted as an upper right triangle:
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| 3 | 9 | 45 | 165 | 855 | 3843 | 21819 |
| | 21 | 84 | 840 | 8610 | 64680 | 689136 |
| | | 231 | 1155 | 13860 | 250635 | 3969735 |
| | | | 3465 | 20790 | 291060 | 6015240 |
| | | | | 65835 | 460845 | 7373520 |
| | | | | | 1514205 | 12113640 |
| | | | | | | 40883535 |
|
