A331956 as a triangular array
| | | | | | | | | 1 |
| | | | | | | | | 0 | | 1 |
| | | | | | | | 0 | | 1 | | 1 |
| | | | | | | 0 | | 1 | | 4 | | 3 |
| | | | | | 0 | | 1 | | 14 | | 31 | | 18 |
| | | | | 0 | | 1 | | 51 | | 255 | | 385 | | 180 |
| | | | 0 | | 1 | | 202 | | 2066 | | 6110 | | 6945 | | 2700 |
| | | 0 | | 1 | | 876 | | 17549 | | 90839 | | 188510 | | 171045 | | 56700 |
| | 0 | | 1 | | 4139 | | 159615 | | 1364307 | | 4603620 | | 7314650 | | 5507460 | | 1587600 |
|
A331956 as a square array
1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| 1 | 4 | 14 | 51 | 202 | 876 | 4139
| 3 | 31 | 255 | 2066 | 17549 | 159615
| 18 | 385 | 6110 | 90839 | 1364307
| 180 | 6945 | 188510 | 4603620
| 2700 | 171045 | 7314650
| 56700 | 5507460
| 1587600
|
A331956 as an upper right triangle
1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0
| | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | | 1 | 4 | 14 | 51 | 202 | 876 | 4139
| | | | 3 | 31 | 255 | 2066 | 17549 | 159615
| | | | | 18 | 385 | 6110 | 90839 | 1364307
| | | | | | 180 | 6945 | 188510 | 4603620
| | | | | | | 2700 | 171045 | 7314650
| | | | | | | | 56700 | 5507460
| | | | | | | | | 1587600
|
|