A107873 formatted as a triangular array:
| | | | | | | | 1 | | | | | | | | |
| | | | | | | 4 | | 1 | | | | | | | |
| | | | | | 15 | | 5 | | 1 | | | | | | |
| | | | | 84 | | 28 | | 6 | | 1 | | | | | |
| | | | 715 | | 220 | | 45 | | 7 | | 1 | | | | |
| | | 8568 | | 2380 | | 455 | | 66 | | 8 | | 1 | | | |
| | 134596 | | 33649 | | 5985 | | 816 | | 91 | | 9 | | 1 | | |
| 2629575 | | 593775 | | 98280 | | 12650 | | 1330 | | 120 | | 10 | | 1 | |
| 61523748 | | 12620256 | | 1947792 | | 237336 | | 23751 | | 2024 | | 153 | | 11 | | 1 |
A107873 formatted as a square array:
| 1 | 4 | 15 | 84 | 715 | 8568 | 134596 | 2629575 | 61523748 |
| 1 | 5 | 28 | 220 | 2380 | 33649 | 593775 | 12620256 | |
| 1 | 6 | 45 | 455 | 5985 | 98280 | 1947792 | | |
| 1 | 7 | 66 | 816 | 12650 | 237336 | | | |
| 1 | 8 | 91 | 1330 | 23751 | | | | |
| 1 | 9 | 120 | 2024 | | | | | |
| 1 | 10 | 153 | | | | | | |
| 1 | 11 | | | | | | | |
| 1 | | | | | | | | |
A107873 formatted as an upper right triangle:
| 1 | 4 | 15 | 84 | 715 | 8568 | 134596 | 2629575 | 61523748 |
| 1 | 5 | 28 | 220 | 2380 | 33649 | 593775 | 12620256 |
| | 1 | 6 | 45 | 455 | 5985 | 98280 | 1947792 |
| | | 1 | 7 | 66 | 816 | 12650 | 237336 |
| | | | 1 | 8 | 91 | 1330 | 23751 |
| | | | | 1 | 9 | 120 | 2024 |
| | | | | | 1 | 10 | 153 |
| | | | | | | 1 | 11 |
| | | | | | | | 1 |
|
