A180989 as a triangular array
| | | | | | | | | | | | | 0 |
| | | | | | | | | | | | | 0 | | 0 |
| | | | | | | | | | | | 0 | | 0 | | 0 |
| | | | | | | | | | | 0 | | 0 | | 0 | | 0 |
| | | | | | | | | | 0 | | 0 | | 0 | | 0 | | 0 |
| | | | | | | | | 0 | | 0 | | 0 | | 1 | | 0 | | 0 |
| | | | | | | | 0 | | 0 | | 0 | | 0 | | 4 | | 0 | | 0 |
| | | | | | | 0 | | 0 | | 0 | | 0 | | 19 | | 6 | | 0 | | 0 |
| | | | | | 0 | | 0 | | 0 | | 0 | | 0 | | 196 | | 4 | | 0 | | 0 |
| | | | | 0 | | 0 | | 0 | | 0 | | 0 | | 721 | | 873 | | 1 | | 0 | | 0 |
| | | | 0 | | 0 | | 0 | | 0 | | 0 | | 0 | | 17630 | | 2200 | | 0 | | 0 | | 0 |
| | | 0 | | 0 | | 0 | | 0 | | 0 | | 0 | | 67264 | | 194176 | | 3489 | | 0 | | 0 | | 0 |
| | 0 | | 0 | | 0 | | 0 | | 0 | | 0 | | 0 | | 3673129 | | 1283875 |
|
A180989 as a square array
0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0
| 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0
| 0 | 0 | 4 | 19 | 0 | 0 | 0 | 0 | 0
| 0 | 0 | 6 | 196 | 721 | 0 | 0 | 0
| 0 | 0 | 4 | 873 | 17630 | 67264 | 0
| 0 | 0 | 1 | 2200 | 194176 | 3673129
| 0 | 0 | 0 | 3489 | 1283875
| 0 | 0 | 0
| 0 | 0
| 0
|
A180989 as an upper right triangle
0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0
| | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0
| | | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0
| | | | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0
| | | | | 0 | 0 | 4 | 19 | 0 | 0 | 0 | 0 | 0
| | | | | | 0 | 0 | 6 | 196 | 721 | 0 | 0 | 0
| | | | | | | 0 | 0 | 4 | 873 | 17630 | 67264 | 0
| | | | | | | | 0 | 0 | 1 | 2200 | 194176 | 3673129
| | | | | | | | | 0 | 0 | 0 | 3489 | 1283875
| | | | | | | | | | 0 | 0 | 0
| | | | | | | | | | | 0 | 0
| | | | | | | | | | | | 0
| | | | | | | | | | | |
|
|