A022170 as a triangular array
| | | | | | | | | 1 |
| | | | | | | | | 1 | | 1 |
| | | | | | | | 1 | | 7 | | 1 |
| | | | | | | 1 | | 43 | | 43 | | 1 |
| | | | | | 1 | | 259 | | 1591 | | 259 | | 1 |
| | | | | 1 | | 1555 | | 57535 | | 57535 | | 1555 | | 1 |
| | | | 1 | | 9331 | | 2072815 | | 12485095 | | 2072815 | | 9331 | | 1 |
| | | 1 | | 55987 | | 74630671 | | 2698853335 | | 2698853335 | | 74630671 | | 55987 | | 1 |
| | 1 | | 335923 |
|
A022170 as a square array
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 7 | 43 | 259 | 1555 | 9331 | 55987 | 335923
| | 1 | 43 | 1591 | 57535 | 2072815 | 74630671
| | 1 | 259 | 57535 | 12485095 | 2698853335
| | 1 | 1555 | 2072815 | 2698853335
| | 1 | 9331 | 74630671
| | 1 | 55987
| | 1
|
A022170 as an upper right triangle
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 7 | 43 | 259 | 1555 | 9331 | 55987 | 335923
| | | 1 | 43 | 1591 | 57535 | 2072815 | 74630671
| | | | 1 | 259 | 57535 | 12485095 | 2698853335
| | | | | 1 | 1555 | 2072815 | 2698853335
| | | | | | 1 | 9331 | 74630671
| | | | | | | 1 | 55987
| | | | | | | | 1
| | | | | | | |
|
|
