A217257 as a triangular array
| | | | | | | | | | | | | | | 1 |
| | | | | | | | | | | | | | | 1 | | 0 |
| | | | | | | | | | | | | | 1 | | 1 | | 0 |
| | | | | | | | | | | | | 1 | | 2 | | 0 | | 0 |
| | | | | | | | | | | | 1 | | 3 | | 2 | | 0 | | 0 |
| | | | | | | | | | | 1 | | 4 | | 5 | | 0 | | 0 | | 0 |
| | | | | | | | | | 1 | | 5 | | 9 | | 5 | | 0 | | 0 | | 0 |
| | | | | | | | | 0 | | 6 | | 14 | | 14 | | 0 | | 0 | | 0 | | 0 |
| | | | | | | | 0 | | 6 | | 20 | | 28 | | 14 | | 0 | | 0 | | 0 | | 0 |
| | | | | | | 0 | | 0 | | 26 | | 48 | | 42 | | 0 | | 0 | | 0 | | 0 | | 0 |
| | | | | | 0 | | 0 | | 26 | | 74 | | 90 | | 42 | | 0 | | 0 | | 0 | | 0 | | 0 |
| | | | | 0 | | 0 | | 0 | | 100 | | 164 | | 132 | | 0 | | 0 | | 0 | | 0 | | 0 | | 0 |
| | | | 0 | | 0 | | 0 | | 100 | | 264 | | 296 | | 132 | | 0 | | 0 | | 0 | | 0 | | 0 | | 0 |
| | | 0 | | 0 | | 0 | | 0 | | 364 | | 560 | | 428 | | 0 | | 0 | | 0 | | 0 | | 0 | | 0 | | 0 |
| | 0 | | 0 |
|
A217257 as a square array
1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 6 | 0 | 0 | 0 | 0 | 0 | 0
| 0 | 0 | 2 | 5 | 9 | 14 | 20 | 26 | 26 | 0 | 0 | 0
| 0 | 0 | 0 | 5 | 14 | 28 | 48 | 74 | 100 | 100 | 0
| 0 | 0 | 0 | 0 | 14 | 42 | 90 | 164 | 264 | 364
| 0 | 0 | 0 | 0 | 0 | 42 | 132 | 296 | 560
| 0 | 0 | 0 | 0 | 0 | 0 | 132 | 428
| 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
|
A217257 as an upper right triangle
1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0
| | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 6 | 0 | 0 | 0 | 0 | 0 | 0
| | | 0 | 0 | 2 | 5 | 9 | 14 | 20 | 26 | 26 | 0 | 0 | 0
| | | | 0 | 0 | 0 | 5 | 14 | 28 | 48 | 74 | 100 | 100 | 0
| | | | | 0 | 0 | 0 | 0 | 14 | 42 | 90 | 164 | 264 | 364
| | | | | | 0 | 0 | 0 | 0 | 0 | 42 | 132 | 296 | 560
| | | | | | | 0 | 0 | 0 | 0 | 0 | 0 | 132 | 428
| | | | | | | | 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
| | | | | | | | | | | | | |
|
|