A154921 formatted as a triangular array:
| | | | | | | | 1 | | | | | | | | |
| | | | | | | 1 | | 1 | | | | | | | |
| | | | | | 3 | | 2 | | 1 | | | | | | |
| | | | | 13 | | 9 | | 3 | | 1 | | | | | |
| | | | 75 | | 52 | | 18 | | 4 | | 1 | | | | |
| | | 541 | | 375 | | 130 | | 30 | | 5 | | 1 | | | |
| | 4683 | | 3246 | | 1125 | | 260 | | 45 | | 6 | | 1 | | |
| 47293 | | 32781 | | 11361 | | 2625 | | 455 | | 63 | | 7 | | 1 | |
| 545835 | | 378344 | | 131124 | | 30296 | | 5250 | | 728 | | 84 | | 8 | | 1 |
A154921 formatted as a square array:
| 1 | 1 | 3 | 13 | 75 | 541 | 4683 | 47293 | 545835 |
| 1 | 2 | 9 | 52 | 375 | 3246 | 32781 | 378344 | |
| 1 | 3 | 18 | 130 | 1125 | 11361 | 131124 | | |
| 1 | 4 | 30 | 260 | 2625 | 30296 | | | |
| 1 | 5 | 45 | 455 | 5250 | | | | |
| 1 | 6 | 63 | 728 | | | | | |
| 1 | 7 | 84 | | | | | | |
| 1 | 8 | | | | | | | |
| 1 | | | | | | | | |
A154921 formatted as an upper right triangle:
| 1 | 1 | 3 | 13 | 75 | 541 | 4683 | 47293 | 545835 |
| 1 | 2 | 9 | 52 | 375 | 3246 | 32781 | 378344 |
| | 1 | 3 | 18 | 130 | 1125 | 11361 | 131124 |
| | | 1 | 4 | 30 | 260 | 2625 | 30296 |
| | | | 1 | 5 | 45 | 455 | 5250 |
| | | | | 1 | 6 | 63 | 728 |
| | | | | | 1 | 7 | 84 |
| | | | | | | 1 | 8 |
| | | | | | | | 1 |
|
