A320031 as a triangular array
| | | | | | | | | | | 1 |
| | | | | | | | | | | 1 | | 1 |
| | | | | | | | | | 1 | | 2 | | 1 |
| | | | | | | | | 1 | | 3 | | 5 | | 1 |
| | | | | | | | 1 | | 4 | | 13 | | 16 | | 1 |
| | | | | | | 1 | | 5 | | 25 | | 79 | | 65 | | 1 |
| | | | | | 1 | | 6 | | 41 | | 226 | | 633 | | 326 | | 1 |
| | | | | 1 | | 7 | | 61 | | 493 | | 2713 | | 6331 | | 1957 | | 1 |
| | | | 1 | | 8 | | 85 | | 916 | | 7889 | | 40696 | | 75973 | | 13700 | | 1 |
| | | 1 | | 9 | | 113 | | 1531 | | 18321 | | 157781 | | 732529 | | 1063623 | | 109601 | | 1 |
| | 1 | | 10 | | 145 | | 2374 | | 36745 | | 458026 | | 3786745 | | 15383110 | | 17017969 | | 986410 | | 1 |
|
A320031 as a square array
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10
| | 1 | 5 | 13 | 25 | 41 | 61 | 85 | 113 | 145
| | 1 | 16 | 79 | 226 | 493 | 916 | 1531 | 2374
| | 1 | 65 | 633 | 2713 | 7889 | 18321 | 36745
| | 1 | 326 | 6331 | 40696 | 157781 | 458026
| | 1 | 1957 | 75973 | 732529 | 3786745
| | 1 | 13700 | 1063623 | 15383110
| | 1 | 109601 | 17017969
| | 1 | 986410
| | 1
|
A320031 as an upper right triangle
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10
| | | 1 | 5 | 13 | 25 | 41 | 61 | 85 | 113 | 145
| | | | 1 | 16 | 79 | 226 | 493 | 916 | 1531 | 2374
| | | | | 1 | 65 | 633 | 2713 | 7889 | 18321 | 36745
| | | | | | 1 | 326 | 6331 | 40696 | 157781 | 458026
| | | | | | | 1 | 1957 | 75973 | 732529 | 3786745
| | | | | | | | 1 | 13700 | 1063623 | 15383110
| | | | | | | | | 1 | 109601 | 17017969
| | | | | | | | | | 1 | 986410
| | | | | | | | | | | 1
|
|
