A216220 as a triangular array
| | | | | | | | | | | 1 |
| | | | | | | | | | | 1 | | 1 |
| | | | | | | | | | 1 | | 2 | | 0 |
| | | | | | | | | 1 | | 3 | | 2 | | 0 |
| | | | | | | | 0 | | 4 | | 5 | | 0 | | 0 |
| | | | | | | 0 | | 4 | | 9 | | 5 | | 0 | | 0 |
| | | | | | 0 | | 0 | | 13 | | 14 | | 0 | | 0 | | 0 |
| | | | | 0 | | 0 | | 13 | | 27 | | 14 | | 0 | | 0 | | 0 |
| | | | 0 | | 0 | | 0 | | 40 | | 41 | | 0 | | 0 | | 0 | | 0 |
| | | 0 | | 0 | | 0 | | 40 | | 81 | | 41 | | 0 | | 0 | | 0 | | 0 |
| | 0 | | 0 | | 0 | | 0 | | 121 | | 122 | | 0 | | 0 | | 0 | | 0 | | 0 |
|
A216220 as a square array
1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0
| 1 | 2 | 3 | 4 | 4 | 0 | 0 | 0 | 0 | 0
| 0 | 2 | 5 | 9 | 13 | 13 | 0 | 0 | 0
| 0 | 0 | 5 | 14 | 27 | 40 | 40 | 0
| 0 | 0 | 0 | 14 | 41 | 81 | 121
| 0 | 0 | 0 | 0 | 41 | 122
| 0 | 0 | 0 | 0 | 0
| 0 | 0 | 0 | 0
| 0 | 0 | 0
| 0 | 0
| 0
|
A216220 as an upper right triangle
1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0
| | 1 | 2 | 3 | 4 | 4 | 0 | 0 | 0 | 0 | 0
| | | 0 | 2 | 5 | 9 | 13 | 13 | 0 | 0 | 0
| | | | 0 | 0 | 5 | 14 | 27 | 40 | 40 | 0
| | | | | 0 | 0 | 0 | 14 | 41 | 81 | 121
| | | | | | 0 | 0 | 0 | 0 | 41 | 122
| | | | | | | 0 | 0 | 0 | 0 | 0
| | | | | | | | 0 | 0 | 0 | 0
| | | | | | | | | 0 | 0 | 0
| | | | | | | | | | 0 | 0
| | | | | | | | | | | 0
|
|