A022167 as a triangular array
| | | | | | | | | 1 |
| | | | | | | | | 1 | | 1 |
| | | | | | | | 1 | | 4 | | 1 |
| | | | | | | 1 | | 13 | | 13 | | 1 |
| | | | | | 1 | | 40 | | 130 | | 40 | | 1 |
| | | | | 1 | | 121 | | 1210 | | 1210 | | 121 | | 1 |
| | | | 1 | | 364 | | 11011 | | 33880 | | 11011 | | 364 | | 1 |
| | | 1 | | 1093 | | 99463 | | 925771 | | 925771 | | 99463 | | 1093 | | 1 |
| | 1 | | 3280 | | 896260 | | 25095280 | | 75913222 | | 25095280 | | 896260 | | 3280 | | 1 |
|
A022167 as a square array
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 4 | 13 | 40 | 121 | 364 | 1093 | 3280
| | 1 | 13 | 130 | 1210 | 11011 | 99463 | 896260
| | 1 | 40 | 1210 | 33880 | 925771 | 25095280
| | 1 | 121 | 11011 | 925771 | 75913222
| | 1 | 364 | 99463 | 25095280
| | 1 | 1093 | 896260
| | 1 | 3280
| | 1
|
A022167 as an upper right triangle
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 4 | 13 | 40 | 121 | 364 | 1093 | 3280
| | | 1 | 13 | 130 | 1210 | 11011 | 99463 | 896260
| | | | 1 | 40 | 1210 | 33880 | 925771 | 25095280
| | | | | 1 | 121 | 11011 | 925771 | 75913222
| | | | | | 1 | 364 | 99463 | 25095280
| | | | | | | 1 | 1093 | 896260
| | | | | | | | 1 | 3280
| | | | | | | | | 1
|
|
