A008955 as a triangular array
| | | | | | | | | 1 |
| | | | | | | | | 1 | | 1 |
| | | | | | | | 1 | | 5 | | 4 |
| | | | | | | 1 | | 14 | | 49 | | 36 |
| | | | | | 1 | | 30 | | 273 | | 820 | | 576 |
| | | | | 1 | | 55 | | 1023 | | 7645 | | 21076 | | 14400 |
| | | | 1 | | 91 | | 3003 | | 44473 | | 296296 | | 773136 | | 518400 |
| | | 1 | | 140 | | 7462 | | 191620 | | 2475473 | | 15291640 | | 38402064 | | 25401600 |
| | 1 | | 204 | | 16422 | | 669188 | | 14739153 | | 173721912 | | 1017067024 | | 2483133696 | | 1625702400 |
|
A008955 as a square array
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 5 | 14 | 30 | 55 | 91 | 140 | 204
| | 4 | 49 | 273 | 1023 | 3003 | 7462 | 16422
| | 36 | 820 | 7645 | 44473 | 191620 | 669188
| | 576 | 21076 | 296296 | 2475473 | 14739153
| | 14400 | 773136 | 15291640 | 173721912
| | 518400 | 38402064 | 1017067024
| | 25401600 | 2483133696
| | 1625702400
|
A008955 as an upper right triangle
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 5 | 14 | 30 | 55 | 91 | 140 | 204
| | | 4 | 49 | 273 | 1023 | 3003 | 7462 | 16422
| | | | 36 | 820 | 7645 | 44473 | 191620 | 669188
| | | | | 576 | 21076 | 296296 | 2475473 | 14739153
| | | | | | 14400 | 773136 | 15291640 | 173721912
| | | | | | | 518400 | 38402064 | 1017067024
| | | | | | | | 25401600 | 2483133696
| | | | | | | | | 1625702400
|
|
