A051287 formatted as a triangular array:
| | | | | | | | | | 1 | | | | | | | | | | |
| | | | | | | | | 1 | | 1 | | | | | | | | | |
| | | | | | | | 1 | | 2 | | 1 | | | | | | | | |
| | | | | | | 1 | | 2 | | 2 | | 1 | | | | | | | |
| | | | | | 1 | | 4 | | 4 | | 4 | | 1 | | | | | | |
| | | | | 1 | | 4 | | 4 | | 4 | | 4 | | 1 | | | | | |
| | | | 1 | | 6 | | 12 | | 8 | | 12 | | 6 | | 1 | | | | |
| | | 1 | | 6 | | 12 | | 8 | | 8 | | 12 | | 6 | | 1 | | | |
| | 1 | | 8 | | 24 | | 32 | | 16 | | 32 | | 24 | | 8 | | 1 | | |
| 1 | | 8 | | 24 | | 32 | | 16 | | 16 | | 32 | | 24 | | 8 | | 1 | |
| 1 | | 10 | | 40 | | 80 | | 80 | | 32 | | 80 | | 80 | | 40 | | 10 | | 1 |
A051287 formatted as a square array:
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| 1 | 2 | 2 | 4 | 4 | 6 | 6 | 8 | 8 | 10 | |
| 1 | 2 | 4 | 4 | 12 | 12 | 24 | 24 | 40 | | |
| 1 | 4 | 4 | 8 | 8 | 32 | 32 | 80 | | | |
| 1 | 4 | 12 | 8 | 16 | 16 | 80 | | | | |
| 1 | 6 | 12 | 32 | 16 | 32 | | | | | |
| 1 | 6 | 24 | 32 | 80 | | | | | | |
| 1 | 8 | 24 | 80 | | | | | | | |
| 1 | 8 | 40 | | | | | | | | |
| 1 | 10 | | | | | | | | | |
| 1 | | | | | | | | | | |
A051287 formatted as an upper right triangle:
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| 1 | 2 | 2 | 4 | 4 | 6 | 6 | 8 | 8 | 10 |
| | 1 | 2 | 4 | 4 | 12 | 12 | 24 | 24 | 40 |
| | | 1 | 4 | 4 | 8 | 8 | 32 | 32 | 80 |
| | | | 1 | 4 | 12 | 8 | 16 | 16 | 80 |
| | | | | 1 | 6 | 12 | 32 | 16 | 32 |
| | | | | | 1 | 6 | 24 | 32 | 80 |
| | | | | | | 1 | 8 | 24 | 80 |
| | | | | | | | 1 | 8 | 40 |
| | | | | | | | | 1 | 10 |
| | | | | | | | | | 1 |
|