A100257 as a triangular array
| | | | | | | | | | | | | 1 |
| | | | | | | | | | | | | 1 | | 0 |
| | | | | | | | | | | | 1 | | 0 | | 1 |
| | | | | | | | | | | 1 | | 0 | | 3 | | 0 |
| | | | | | | | | | 1 | | 0 | | 4 | | 0 | | 3 |
| | | | | | | | | 1 | | 0 | | 5 | | 0 | | 10 | | 0 |
| | | | | | | | 1 | | 0 | | 6 | | 0 | | 15 | | 0 | | 10 |
| | | | | | | 1 | | 0 | | 7 | | 0 | | 21 | | 0 | | 35 | | 0 |
| | | | | | 1 | | 0 | | 8 | | 0 | | 28 | | 0 | | 56 | | 0 | | 35 |
| | | | | 1 | | 0 | | 9 | | 0 | | 36 | | 0 | | 84 | | 0 | | 126 | | 0 |
| | | | 1 | | 0 | | 10 | | 0 | | 45 | | 0 | | 120 | | 0 | | 210 | | 0 | | 126 |
| | | 1 | | 0 | | 11 | | 0 | | 55 | | 0 | | 165 | | 0 | | 330 | | 0 | | 462 | | 0 |
| | 1 | | 0 | | 12 | | 0 | | 66 | | 0 | | 220 | | 0 |
|
A100257 as a square array
1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0
| 1 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0
| 3 | 10 | 15 | 21 | 28 | 36 | 45 | 55 | 66
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0
| 10 | 35 | 56 | 84 | 120 | 165 | 220
| 0 | 0 | 0 | 0 | 0 | 0
| 35 | 126 | 210 | 330
| 0 | 0 | 0
| 126 | 462
| 0
|
A100257 as an upper right triangle
1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0
| | | 1 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12
| | | | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0
| | | | | 3 | 10 | 15 | 21 | 28 | 36 | 45 | 55 | 66
| | | | | | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0
| | | | | | | 10 | 35 | 56 | 84 | 120 | 165 | 220
| | | | | | | | 0 | 0 | 0 | 0 | 0 | 0
| | | | | | | | | 35 | 126 | 210 | 330
| | | | | | | | | | 0 | 0 | 0
| | | | | | | | | | | 126 | 462
| | | | | | | | | | | | 0
| | | | | | | | | | | |
|
|