A157391 as a triangular array
| | | | | | | | | | | | 1 |
| | | | | | | | | | | | 1 | | 1 |
| | | | | | | | | | | 1 | | 3 | | 0 |
| | | | | | | | | | 1 | | 9 | | 0 | | 0 |
| | | | | | | | | 1 | | 25 | | 0 | | 0 | | 0 |
| | | | | | | | 1 | | 75 | | 0 | | 0 | | 0 | | 0 |
| | | | | | | 1 | | 231 | | 0 | | 0 | | 0 | | 0 | | 0 |
| | | | | | 1 | | 763 | | 0 | | 0 | | 0 | | 0 | | 0 | | 0 |
| | | | | 1 | | 2619 | | 0 | | 0 | | 0 | | 0 | | 0 | | 0 | | 0 |
| | | | 1 | | 9495 | | 0 | | 0 | | 0 | | 0 | | 0 | | 0 | | 0 | | 0 |
| | | 1 | | 35695 | | 0 | | 0 | | 0 | | 0 | | 0 | | 0 | | 0 | | 0 | | 0 |
| | 1 | | 140151 |
|
A157391 as a square array
1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| 1 | 3 | 9 | 25 | 75 | 231 | 763 | 2619 | 9495 | 35695 | 140151
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0
| 0 | 0 | 0 | 0 | 0 | 0 | 0
| 0 | 0 | 0 | 0 | 0 | 0
| 0 | 0 | 0 | 0 | 0
| 0 | 0 | 0 | 0
| 0 | 0 | 0
| 0 | 0
| 0
|
A157391 as an upper right triangle
1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 3 | 9 | 25 | 75 | 231 | 763 | 2619 | 9495 | 35695 | 140151
| | | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0
| | | | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0
| | | | | 0 | 0 | 0 | 0 | 0 | 0 | 0
| | | | | | 0 | 0 | 0 | 0 | 0 | 0
| | | | | | | 0 | 0 | 0 | 0 | 0
| | | | | | | | 0 | 0 | 0 | 0
| | | | | | | | | 0 | 0 | 0
| | | | | | | | | | 0 | 0
| | | | | | | | | | | 0
| | | | | | | | | | |
|
|