A299521 as a triangular array
| | | | | | | | | | | | 1 |
| | | | | | | | | | | | 1 | | 1 |
| | | | | | | | | | | 1 | | 1 | | 1 |
| | | | | | | | | | 1 | | 1 | | 1 | | 1 |
| | | | | | | | | 1 | | 2 | | 12 | | 2 | | 1 |
| | | | | | | | 1 | | 5 | | 5 | | 5 | | 5 | | 1 |
| | | | | | | 1 | | 9 | | 33 | | 8 | | 33 | | 9 | | 1 |
| | | | | | 1 | | 22 | | 55 | | 41 | | 41 | | 55 | | 22 | | 1 |
| | | | | 1 | | 45 | | 132 | | 117 | | 285 | | 117 | | 132 | | 45 | | 1 |
| | | | 1 | | 101 | | 272 | | 476 | | 1540 | | 1540 | | 476 | | 272 | | 101 | | 1 |
| | | 1 | | 218 | | 630 | | 1743 | | 5869 | | 12411 | | 5869 | | 1743 | | 630 | | 218 | | 1 |
| | 1 | | 477 | | 1355 | | 7078 |
|
A299521 as a square array
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 1 | 1 | 2 | 5 | 9 | 22 | 45 | 101 | 218 | 477
| | 1 | 1 | 12 | 5 | 33 | 55 | 132 | 272 | 630 | 1355
| | 1 | 2 | 5 | 8 | 41 | 117 | 476 | 1743 | 7078
| | 1 | 5 | 33 | 41 | 285 | 1540 | 5869
| | 1 | 9 | 55 | 117 | 1540 | 12411
| | 1 | 22 | 132 | 476 | 5869
| | 1 | 45 | 272 | 1743
| | 1 | 101 | 630
| | 1 | 218
| | 1
|
A299521 as an upper right triangle
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 1 | 1 | 2 | 5 | 9 | 22 | 45 | 101 | 218 | 477
| | | 1 | 1 | 12 | 5 | 33 | 55 | 132 | 272 | 630 | 1355
| | | | 1 | 2 | 5 | 8 | 41 | 117 | 476 | 1743 | 7078
| | | | | 1 | 5 | 33 | 41 | 285 | 1540 | 5869
| | | | | | 1 | 9 | 55 | 117 | 1540 | 12411
| | | | | | | 1 | 22 | 132 | 476 | 5869
| | | | | | | | 1 | 45 | 272 | 1743
| | | | | | | | | 1 | 101 | 630
| | | | | | | | | | 1 | 218
| | | | | | | | | | | 1
| | | | | | | | | | |
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