A108131 as a triangular array
| | | | | | | | | 1 |
| | | | | | | | | 1 | | 1 |
| | | | | | | | 1 | | 1 | | 1 |
| | | | | | | 1 | | 1 | | 6 | | 1 |
| | | | | | 1 | | 1 | | 28 | | 84 | | 1 |
| | | | | 1 | | 1 | | 120 | | 2925 | | 1820 | | 1 |
| | | | 1 | | 1 | | 496 | | 85320 | | 635376 | | 53130 | | 1 |
| | | 1 | | 1 | | 2016 | | 2362041 | | 174792640 | | 234531275 | | 1947792 | | 1 |
| | 1 | | 1 | | 8128 | | 64304604 | | 45545029376 | | 782083984500 | | 131513824548 |
|
A108131 as a square array
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 6 | 28 | 120 | 496 | 2016 | 8128
| | 1 | 84 | 2925 | 85320 | 2362041 | 64304604
| | 1 | 1820 | 635376 | 174792640 | 45545029376
| | 1 | 53130 | 234531275 | 782083984500
| | 1 | 1947792 | 131513824548
| | 1
|
A108131 as an upper right triangle
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | | 1 | 6 | 28 | 120 | 496 | 2016 | 8128
| | | | 1 | 84 | 2925 | 85320 | 2362041 | 64304604
| | | | | 1 | 1820 | 635376 | 174792640 | 45545029376
| | | | | | 1 | 53130 | 234531275 | 782083984500
| | | | | | | 1 | 1947792 | 131513824548
| | | | | | | | 1
| | | | | | | |
|
|
