A271424 as a triangular array
| | | | | | | | | | | | 1 |
| | | | | | | | | | | | 0 | | 1 |
| | | | | | | | | | | 0 | | 1 | | 1 |
| | | | | | | | | | 0 | | 4 | | 0 | | 1 |
| | | | | | | | | 0 | | 11 | | 3 | | 0 | | 1 |
| | | | | | | | 0 | | 51 | | 0 | | 0 | | 0 | | 1 |
| | | | | | | 0 | | 132 | | 55 | | 15 | | 0 | | 0 | | 1 |
| | | | | | 0 | | 771 | | 105 | | 0 | | 0 | | 0 | | 0 | | 1 |
| | | | | 0 | | 3089 | | 945 | | 0 | | 105 | | 0 | | 0 | | 0 | | 1 |
| | | | 0 | | 18388 | | 1218 | | 1540 | | 0 | | 0 | | 0 | | 0 | | 0 | | 1 |
| | | 0 | | 96423 | | 15456 | | 3150 | | 0 | | 945 | | 0 | | 0 | | 0 | | 0 | | 1 |
| | 0 | | 627529 | | 26785 | | 24255 | | 0 | | 0 | | 0 | | 0 | | 0 | | 0 | | 0 | | 1 |
|
A271424 as a square array
1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0
| 1 | 1 | 4 | 11 | 51 | 132 | 771 | 3089 | 18388 | 96423 | 627529
| 1 | 0 | 3 | 0 | 55 | 105 | 945 | 1218 | 15456 | 26785
| 1 | 0 | 0 | 15 | 0 | 0 | 1540 | 3150 | 24255
| 1 | 0 | 0 | 0 | 105 | 0 | 0 | 0
| 1 | 0 | 0 | 0 | 0 | 945 | 0
| 1 | 0 | 0 | 0 | 0 | 0
| 1 | 0 | 0 | 0 | 0
| 1 | 0 | 0 | 0
| 1 | 0 | 0
| 1 | 0
| 1
|
A271424 as an upper right triangle
1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0
| | 1 | 1 | 4 | 11 | 51 | 132 | 771 | 3089 | 18388 | 96423 | 627529
| | | 1 | 0 | 3 | 0 | 55 | 105 | 945 | 1218 | 15456 | 26785
| | | | 1 | 0 | 0 | 15 | 0 | 0 | 1540 | 3150 | 24255
| | | | | 1 | 0 | 0 | 0 | 105 | 0 | 0 | 0
| | | | | | 1 | 0 | 0 | 0 | 0 | 945 | 0
| | | | | | | 1 | 0 | 0 | 0 | 0 | 0
| | | | | | | | 1 | 0 | 0 | 0 | 0
| | | | | | | | | 1 | 0 | 0 | 0
| | | | | | | | | | 1 | 0 | 0
| | | | | | | | | | | 1 | 0
| | | | | | | | | | | | 1
|
|