A177809 as a triangular array
| | | | | | | | | 1 |
| | | | | | | | | 1 | | 1 |
| | | | | | | | 1 | | 252 | | 1 |
| | | | | | | 1 | | 3003 | | 3003 | | 1 |
| | | | | | 1 | | 15504 | | 184756 | | 15504 | | 1 |
| | | | | 1 | | 53130 | | 3268760 | | 3268760 | | 53130 | | 1 |
| | | | 1 | | 142506 | | 30045015 | | 155117520 | | 30045015 | | 142506 | | 1 |
| | | 1 | | 324632 | | 183579396 | | 3247943160 | | 3247943160 | | 183579396 | | 324632 | | 1 |
| | 1 | | 658008 | | 847660528 | | 40225345056 |
|
A177809 as a square array
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 252 | 3003 | 15504 | 53130 | 142506 | 324632 | 658008
| | 1 | 3003 | 184756 | 3268760 | 30045015 | 183579396 | 847660528
| | 1 | 15504 | 3268760 | 155117520 | 3247943160 | 40225345056
| | 1 | 53130 | 30045015 | 3247943160
| | 1 | 142506 | 183579396
| | 1 | 324632
| | 1
|
A177809 as an upper right triangle
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 252 | 3003 | 15504 | 53130 | 142506 | 324632 | 658008
| | | 1 | 3003 | 184756 | 3268760 | 30045015 | 183579396 | 847660528
| | | | 1 | 15504 | 3268760 | 155117520 | 3247943160 | 40225345056
| | | | | 1 | 53130 | 30045015 | 3247943160
| | | | | | 1 | 142506 | 183579396
| | | | | | | 1 | 324632
| | | | | | | | 1
| | | | | | | |
|
|
