A230421 as a triangular array
| | | | | | | | | | 1 |
| | | | | | | | | | 1 | | 1 |
| | | | | | | | | 1 | | 2 | | 2 |
| | | | | | | | 4 | | 4 | | 5 | | 6 |
| | | | | | | 12 | | 14 | | 16 | | 19 | | 22 |
| | | | | | 55 | | 59 | | 65 | | 73 | | 82 | | 94 |
| | | | | 293 | | 314 | | 336 | | 362 | | 395 | | 432 | | 479 |
| | | | 1881 | | 1971 | | 2073 | | 2189 | | 2324 | | 2482 | | 2667 | | 2886 |
| | | 14011 | | 14555 | | 15140 | | 15775 | | 16473 | | 17249 | | 18124 | | 19123 | | 20276 |
| | 115974 | | 120010 | | 124289 | | 128831 | | 133664 | | 138828 | | 144378 | | 150389 | | 156961 | | 164224 |
|
A230421 as a square array
1 | 1 | 1 | 4 | 12 | 55 | 293 | 1881 | 14011 | 115974
| 1 | 2 | 4 | 14 | 59 | 314 | 1971 | 14555 | 120010
| 2 | 5 | 16 | 65 | 336 | 2073 | 15140 | 124289
| 6 | 19 | 73 | 362 | 2189 | 15775 | 128831
| 22 | 82 | 395 | 2324 | 16473 | 133664
| 94 | 432 | 2482 | 17249 | 138828
| 479 | 2667 | 18124 | 144378
| 2886 | 19123 | 150389
| 20276 | 156961
| 164224
|
A230421 as an upper right triangle
1 | 1 | 1 | 4 | 12 | 55 | 293 | 1881 | 14011 | 115974
| | 1 | 2 | 4 | 14 | 59 | 314 | 1971 | 14555 | 120010
| | | 2 | 5 | 16 | 65 | 336 | 2073 | 15140 | 124289
| | | | 6 | 19 | 73 | 362 | 2189 | 15775 | 128831
| | | | | 22 | 82 | 395 | 2324 | 16473 | 133664
| | | | | | 94 | 432 | 2482 | 17249 | 138828
| | | | | | | 479 | 2667 | 18124 | 144378
| | | | | | | | 2886 | 19123 | 150389
| | | | | | | | | 20276 | 156961
| | | | | | | | | | 164224
|
|