A151509 as a triangular array
| | | | | | | | | | | | 1 |
| | | | | | | | | | | | 0 | | 1 |
| | | | | | | | | | | 0 | | 1 | | 1 |
| | | | | | | | | | 0 | | 1 | | 3 | | 1 |
| | | | | | | | | 0 | | 1 | | 7 | | 6 | | 1 |
| | | | | | | | 0 | | 1 | | 15 | | 25 | | 10 | | 1 |
| | | | | | | 0 | | 0 | | 31 | | 90 | | 65 | | 15 | | 1 |
| | | | | | 0 | | 0 | | 56 | | 301 | | 350 | | 140 | | 21 | | 1 |
| | | | | 0 | | 0 | | 91 | | 938 | | 1701 | | 1050 | | 266 | | 28 | | 1 |
| | | | 0 | | 0 | | 126 | | 2737 | | 7686 | | 6951 | | 2646 | | 462 | | 36 | | 1 |
| | | 0 | | 0 | | 126 | | 7455 | | 32725 | | 42315 | | 22827 | | 5880 | | 750 | | 45 | | 1 |
| | 0 | | 0 | | 0 | | 18711 | | 132055 |
|
A151509 as a square array
1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0
| 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0
| 1 | 3 | 7 | 15 | 31 | 56 | 91 | 126 | 126 | 0
| 1 | 6 | 25 | 90 | 301 | 938 | 2737 | 7455 | 18711
| 1 | 10 | 65 | 350 | 1701 | 7686 | 32725 | 132055
| 1 | 15 | 140 | 1050 | 6951 | 42315
| 1 | 21 | 266 | 2646 | 22827
| 1 | 28 | 462 | 5880
| 1 | 36 | 750
| 1 | 45
| 1
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A151509 as an upper right triangle
1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0
| | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0
| | | 1 | 3 | 7 | 15 | 31 | 56 | 91 | 126 | 126 | 0
| | | | 1 | 6 | 25 | 90 | 301 | 938 | 2737 | 7455 | 18711
| | | | | 1 | 10 | 65 | 350 | 1701 | 7686 | 32725 | 132055
| | | | | | 1 | 15 | 140 | 1050 | 6951 | 42315
| | | | | | | 1 | 21 | 266 | 2646 | 22827
| | | | | | | | 1 | 28 | 462 | 5880
| | | | | | | | | 1 | 36 | 750
| | | | | | | | | | 1 | 45
| | | | | | | | | | | 1
| | | | | | | | | | |
|
|