A022172 as a triangular array
| | | | | | | | 1 |
| | | | | | | | 1 | | 1 |
| | | | | | | 1 | | 9 | | 1 |
| | | | | | 1 | | 73 | | 73 | | 1 |
| | | | | 1 | | 585 | | 4745 | | 585 | | 1 |
| | | | 1 | | 4681 | | 304265 | | 304265 | | 4681 | | 1 |
| | | 1 | | 37449 | | 19477641 | | 156087945 | | 19477641 | | 37449 | | 1 |
| | 1 | | 299593 | | 1246606473 | | 79936505481 | | 79936505481 | | 1246606473 | | 299593 | | 1 |
|
A022172 as a square array
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 9 | 73 | 585 | 4681 | 37449 | 299593
| | 1 | 73 | 4745 | 304265 | 19477641 | 1246606473
| | 1 | 585 | 304265 | 156087945 | 79936505481
| | 1 | 4681 | 19477641 | 79936505481
| | 1 | 37449 | 1246606473
| | 1 | 299593
| | 1
|
A022172 as an upper right triangle
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 9 | 73 | 585 | 4681 | 37449 | 299593
| | | 1 | 73 | 4745 | 304265 | 19477641 | 1246606473
| | | | 1 | 585 | 304265 | 156087945 | 79936505481
| | | | | 1 | 4681 | 19477641 | 79936505481
| | | | | | 1 | 37449 | 1246606473
| | | | | | | 1 | 299593
| | | | | | | | 1
|
|
