A131402 as a triangular array
| | | | | | | | | | | | 1 |
| | | | | | | | | | | | 1 | | 1 |
| | | | | | | | | | | 1 | | 3 | | 1 |
| | | | | | | | | | 1 | | 4 | | 4 | | 1 |
| | | | | | | | | 1 | | 6 | | 7 | | 6 | | 1 |
| | | | | | | | 1 | | 7 | | 14 | | 14 | | 7 | | 1 |
| | | | | | | 1 | | 9 | | 20 | | 33 | | 20 | | 9 | | 1 |
| | | | | | 1 | | 10 | | 31 | | 56 | | 56 | | 31 | | 10 | | 1 |
| | | | | 1 | | 12 | | 40 | | 97 | | 111 | | 97 | | 40 | | 12 | | 1 |
| | | | 1 | | 13 | | 55 | | 142 | | 217 | | 217 | | 142 | | 55 | | 13 | | 1 |
| | | 1 | | 15 | | 67 | | 213 | | 358 | | 463 | | 358 | | 213 | | 67 | | 15 | | 1 |
| | 1 | | 16 | | 86 | | 287 | | 590 | | 841 | | 841 | | 590 | | 287 | | 86 | | 16 | | 1 |
|
A131402 as a square array
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 3 | 4 | 6 | 7 | 9 | 10 | 12 | 13 | 15 | 16
| | 1 | 4 | 7 | 14 | 20 | 31 | 40 | 55 | 67 | 86
| | 1 | 6 | 14 | 33 | 56 | 97 | 142 | 213 | 287
| | 1 | 7 | 20 | 56 | 111 | 217 | 358 | 590
| | 1 | 9 | 31 | 97 | 217 | 463 | 841
| | 1 | 10 | 40 | 142 | 358 | 841
| | 1 | 12 | 55 | 213 | 590
| | 1 | 13 | 67 | 287
| | 1 | 15 | 86
| | 1 | 16
| | 1
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A131402 as an upper right triangle
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 3 | 4 | 6 | 7 | 9 | 10 | 12 | 13 | 15 | 16
| | | 1 | 4 | 7 | 14 | 20 | 31 | 40 | 55 | 67 | 86
| | | | 1 | 6 | 14 | 33 | 56 | 97 | 142 | 213 | 287
| | | | | 1 | 7 | 20 | 56 | 111 | 217 | 358 | 590
| | | | | | 1 | 9 | 31 | 97 | 217 | 463 | 841
| | | | | | | 1 | 10 | 40 | 142 | 358 | 841
| | | | | | | | 1 | 12 | 55 | 213 | 590
| | | | | | | | | 1 | 13 | 67 | 287
| | | | | | | | | | 1 | 15 | 86
| | | | | | | | | | | 1 | 16
| | | | | | | | | | | | 1
|
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