A209687 as a triangular array
| | | | | | | | | | | 1 |
| | | | | | | | | | | 0 | | 2 |
| | | | | | | | | | 0 | | 1 | | 5 |
| | | | | | | | | 0 | | 1 | | 5 | | 12 |
| | | | | | | | 0 | | 1 | | 6 | | 18 | | 29 |
| | | | | | | 0 | | 1 | | 7 | | 26 | | 58 | | 70 |
| | | | | | 0 | | 1 | | 8 | | 35 | | 98 | | 175 | | 169 |
| | | | | 0 | | 1 | | 9 | | 45 | | 149 | | 339 | | 507 | | 408 |
| | | | 0 | | 1 | | 10 | | 56 | | 212 | | 574 | | 1108 | | 1428 | | 985 |
| | | 0 | | 1 | | 11 | | 68 | | 288 | | 894 | | 2066 | | 3476 | | 3940 | | 2378 |
| | 0 | | 1 | | 12 | | 81 | | 378 | | 1314 | | 3492 | | 7074 | | 10572 |
|
A209687 as a square array
1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0
| 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| 5 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12
| 12 | 18 | 26 | 35 | 45 | 56 | 68 | 81
| 29 | 58 | 98 | 149 | 212 | 288 | 378
| 70 | 175 | 339 | 574 | 894 | 1314
| 169 | 507 | 1108 | 2066 | 3492
| 408 | 1428 | 3476 | 7074
| 985 | 3940 | 10572
| 2378
|
A209687 as an upper right triangle
1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0
| | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | | 5 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12
| | | | 12 | 18 | 26 | 35 | 45 | 56 | 68 | 81
| | | | | 29 | 58 | 98 | 149 | 212 | 288 | 378
| | | | | | 70 | 175 | 339 | 574 | 894 | 1314
| | | | | | | 169 | 507 | 1108 | 2066 | 3492
| | | | | | | | 408 | 1428 | 3476 | 7074
| | | | | | | | | 985 | 3940 | 10572
| | | | | | | | | | 2378
| | | | | | | | | |
|
|