A051340 formatted as a triangular array:
| | | | | | | | | | | | 1 | | | | | | | | | | | | |
| | | | | | | | | | | 1 | | 2 | | | | | | | | | | | |
| | | | | | | | | | 1 | | 1 | | 3 | | | | | | | | | | |
| | | | | | | | | 1 | | 1 | | 1 | | 4 | | | | | | | | | |
| | | | | | | | 1 | | 1 | | 1 | | 1 | | 5 | | | | | | | | |
| | | | | | | 1 | | 1 | | 1 | | 1 | | 1 | | 6 | | | | | | | |
| | | | | | 1 | | 1 | | 1 | | 1 | | 1 | | 1 | | 7 | | | | | | |
| | | | | 1 | | 1 | | 1 | | 1 | | 1 | | 1 | | 1 | | 8 | | | | | |
| | | | 1 | | 1 | | 1 | | 1 | | 1 | | 1 | | 1 | | 1 | | 9 | | | | |
| | | 1 | | 1 | | 1 | | 1 | | 1 | | 1 | | 1 | | 1 | | 1 | | 10 | | | |
| | 1 | | 1 | | 1 | | 1 | | 1 | | 1 | | 1 | | 1 | | 1 | | 1 | | 11 | | |
| 1 | | 1 | | 1 | | 1 | | 1 | | 1 | | 1 | | 1 | | 1 | | 1 | | 1 | | 12 | |
| 1 | | 1 | | 1 | | 1 | | 1 | | 1 | | 1 | | 1 | | 1 | | 1 | | 1 | | 1 | | 13 |
A051340 formatted as a square array:
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |
| 3 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | | |
| 4 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | | | |
| 5 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | | | | |
| 6 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | | | | | |
| 7 | 1 | 1 | 1 | 1 | 1 | 1 | | | | | | |
| 8 | 1 | 1 | 1 | 1 | 1 | | | | | | | |
| 9 | 1 | 1 | 1 | 1 | | | | | | | | |
| 10 | 1 | 1 | 1 | | | | | | | | | |
| 11 | 1 | 1 | | | | | | | | | | |
| 12 | 1 | | | | | | | | | | | |
| 13 | | | | | | | | | | | | |
A051340 formatted as an upper right triangle:
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| | 3 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| | | 4 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| | | | 5 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| | | | | 6 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| | | | | | 7 | 1 | 1 | 1 | 1 | 1 | 1 |
| | | | | | | 8 | 1 | 1 | 1 | 1 | 1 |
| | | | | | | | 9 | 1 | 1 | 1 | 1 |
| | | | | | | | | 10 | 1 | 1 | 1 |
| | | | | | | | | | 11 | 1 | 1 |
| | | | | | | | | | | 12 | 1 |
| | | | | | | | | | | | 13 |
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