A270061 as a triangular array
| | | | | | | | | | | 1 |
| | | | | | | | | | | 1 | | 1 |
| | | | | | | | | | 1 | | 1 | | 1 |
| | | | | | | | | 1 | | 1 | | 1 | | 1 |
| | | | | | | | 1 | | 2 | | 5 | | 2 | | 1 |
| | | | | | | 1 | | 3 | | 14 | | 14 | | 3 | | 1 |
| | | | | | 1 | | 4 | | 45 | | 93 | | 45 | | 4 | | 1 |
| | | | | 1 | | 6 | | 140 | | 590 | | 590 | | 140 | | 6 | | 1 |
| | | | 1 | | 9 | | 438 | | 3710 | | 7517 | | 3710 | | 438 | | 9 | | 1 |
| | | 1 | | 13 | | 1371 | | 23509 | | 96176 | | 96176 | | 23509 | | 1371 | | 13 | | 1 |
| | 1 | | 19 | | 4287 | | 148796 | | 1238818 | | 2501946 | | 1238818 | | 148796 | | 4287 | | 19 | | 1 |
|
A270061 as a square array
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 1 | 1 | 2 | 3 | 4 | 6 | 9 | 13 | 19
| | 1 | 1 | 5 | 14 | 45 | 140 | 438 | 1371 | 4287
| | 1 | 2 | 14 | 93 | 590 | 3710 | 23509 | 148796
| | 1 | 3 | 45 | 590 | 7517 | 96176 | 1238818
| | 1 | 4 | 140 | 3710 | 96176 | 2501946
| | 1 | 6 | 438 | 23509 | 1238818
| | 1 | 9 | 1371 | 148796
| | 1 | 13 | 4287
| | 1 | 19
| | 1
|
A270061 as an upper right triangle
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 1 | 1 | 2 | 3 | 4 | 6 | 9 | 13 | 19
| | | 1 | 1 | 5 | 14 | 45 | 140 | 438 | 1371 | 4287
| | | | 1 | 2 | 14 | 93 | 590 | 3710 | 23509 | 148796
| | | | | 1 | 3 | 45 | 590 | 7517 | 96176 | 1238818
| | | | | | 1 | 4 | 140 | 3710 | 96176 | 2501946
| | | | | | | 1 | 6 | 438 | 23509 | 1238818
| | | | | | | | 1 | 9 | 1371 | 148796
| | | | | | | | | 1 | 13 | 4287
| | | | | | | | | | 1 | 19
| | | | | | | | | | | 1
|
|
