A251120 as a triangular array
| | | | | | | 256 |
| | | | | | | 2500 | | 2500 |
| | | | | | 22500 | | 64660 | | 22500 |
| | | | | 173056 | | 1494029 | | 1494029 | | 173056 |
| | | | 1252161 | | 27945953 | | 86208566 | | 27945953 | | 1252161 |
| | | 8444836 | | 480842776 | | 3816838692 | | 3816838692 | | 480842776 | | 8444836 |
| | 54700816 | | 7521121248 | | 152303295344 |
|
A251120 as a square array
256 | 2500 | 22500 | 173056 | 1252161 | 8444836 | 54700816
| 2500 | 64660 | 1494029 | 27945953 | 480842776 | 7521121248
| 22500 | 1494029 | 86208566 | 3816838692 | 152303295344
| 173056 | 27945953 | 3816838692
| 1252161 | 480842776
| 8444836
|
A251120 as an upper right triangle
256 | 2500 | 22500 | 173056 | 1252161 | 8444836 | 54700816
| | 2500 | 64660 | 1494029 | 27945953 | 480842776 | 7521121248
| | | 22500 | 1494029 | 86208566 | 3816838692 | 152303295344
| | | | 173056 | 27945953 | 3816838692
| | | | | 1252161 | 480842776
| | | | | | 8444836
| | | | | |
|
|