A174480 as a triangular array
| | | | | | | | | | | 1 |
| | | | | | | | | | | 1 | | 1 |
| | | | | | | | | | 1 | | 2 | | 1 |
| | | | | | | | | 1 | | 3 | | 6 | | 1 |
| | | | | | | | 1 | | 4 | | 15 | | 23 | | 1 |
| | | | | | | 1 | | 5 | | 28 | | 102 | | 104 | | 1 |
| | | | | | 1 | | 6 | | 45 | | 274 | | 861 | | 537 | | 1 |
| | | | | 1 | | 7 | | 66 | | 575 | | 3400 | | 8598 | | 3100 | | 1 |
| | | | 1 | | 8 | | 91 | | 1041 | | 9425 | | 50734 | | 98547 | | 19693 | | 1 |
| | | 1 | | 9 | | 120 | | 1708 | | 21216 | | 187455 | | 880312 | | 1270160 | | 136064 | | 1 |
| | 1 | | 10 | | 153 | | 2612 | | 41629 |
|
A174480 as a square array
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10
| | 1 | 6 | 15 | 28 | 45 | 66 | 91 | 120 | 153
| | 1 | 23 | 102 | 274 | 575 | 1041 | 1708 | 2612
| | 1 | 104 | 861 | 3400 | 9425 | 21216 | 41629
| | 1 | 537 | 8598 | 50734 | 187455
| | 1 | 3100 | 98547 | 880312
| | 1 | 19693 | 1270160
| | 1 | 136064
| | 1
|
A174480 as an upper right triangle
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10
| | | 1 | 6 | 15 | 28 | 45 | 66 | 91 | 120 | 153
| | | | 1 | 23 | 102 | 274 | 575 | 1041 | 1708 | 2612
| | | | | 1 | 104 | 861 | 3400 | 9425 | 21216 | 41629
| | | | | | 1 | 537 | 8598 | 50734 | 187455
| | | | | | | 1 | 3100 | 98547 | 880312
| | | | | | | | 1 | 19693 | 1270160
| | | | | | | | | 1 | 136064
| | | | | | | | | | 1
| | | | | | | | | |
|
|
