A034871 as a triangular array
| | | | | | | | | | | 1 |
| | | | | | | | | | | 1 | | 1 |
| | | | | | | | | | 3 | | 3 | | 1 |
| | | | | | | | | 1 | | 5 | | 10 | | 10 |
| | | | | | | | 5 | | 1 | | 1 | | 7 | | 21 |
| | | | | | | 35 | | 35 | | 21 | | 7 | | 1 | | 1 |
| | | | | | 9 | | 36 | | 84 | | 126 | | 126 | | 84 | | 36 |
| | | | | 9 | | 1 | | 1 | | 11 | | 55 | | 165 | | 330 | | 462 |
| | | | 462 | | 330 | | 165 | | 55 | | 11 | | 1 | | 1 | | 13 | | 78 |
| | | 286 | | 715 | | 1287 | | 1716 | | 1716 | | 1287 | | 715 | | 286 | | 78 | | 13 |
| | 1 | | 1 | | 15 | | 105 | | 455 | | 1365 | | 3003 | | 5005 |
|
A034871 as a square array
| 1 | 1 | 3 | 1 | 5 | 35 | 9 | 9 | 462 | 286 | 1
| | 1 | 3 | 5 | 1 | 35 | 36 | 1 | 330 | 715 | 1
| | 1 | 10 | 1 | 21 | 84 | 1 | 165 | 1287 | 15
| | 10 | 7 | 7 | 126 | 11 | 55 | 1716 | 105
| | 21 | 1 | 126 | 55 | 11 | 1716 | 455
| | 1 | 84 | 165 | 1 | 1287 | 1365
| | 36 | 330 | 1 | 715 | 3003
| | 462 | 13 | 286 | 5005
| | 78 | 78
| | 13
|
A034871 as an upper right triangle
| 1 | 1 | 3 | 1 | 5 | 35 | 9 | 9 | 462 | 286 | 1
| | 1 | 3 | 5 | 1 | 35 | 36 | 1 | 330 | 715 | 1
| | | 1 | 10 | 1 | 21 | 84 | 1 | 165 | 1287 | 15
| | | | 10 | 7 | 7 | 126 | 11 | 55 | 1716 | 105
| | | | | 21 | 1 | 126 | 55 | 11 | 1716 | 455
| | | | | | 1 | 84 | 165 | 1 | 1287 | 1365
| | | | | | | 36 | 330 | 1 | 715 | 3003
| | | | | | | | 462 | 13 | 286 | 5005
| | | | | | | | | 78 | 78
| | | | | | | | | | 13
| | | | | | | | | |
|
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