A173621 as a triangular array
| | | | | | | | | 1 |
| | | | | | | | | 1 | | 4 |
| | | | | | | | 1 | | 12 | | 22 |
| | | | | | | 1 | | 24 | | 120 | | 140 |
| | | | | | 1 | | 40 | | 380 | | 1140 | | 969 |
| | | | | 1 | | 60 | | 920 | | 5060 | | 10626 | | 7084 |
| | | | 1 | | 84 | | 1890 | | 16380 | | 61425 | | 98280 | | 53820 |
| | | 1 | | 112 | | 3472 | | 43400 | | 251720 | | 704816 | | 906192 | | 420732 |
| | 1 | | 144 | | 5880 | | 99960 | | 824670 | | 3518592 | | 7791168 | | 8347680 | | 3362260 |
|
A173621 as a square array
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 4 | 12 | 24 | 40 | 60 | 84 | 112 | 144
| | 22 | 120 | 380 | 920 | 1890 | 3472 | 5880
| | 140 | 1140 | 5060 | 16380 | 43400 | 99960
| | 969 | 10626 | 61425 | 251720 | 824670
| | 7084 | 98280 | 704816 | 3518592
| | 53820 | 906192 | 7791168
| | 420732 | 8347680
| | 3362260
|
A173621 as an upper right triangle
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 4 | 12 | 24 | 40 | 60 | 84 | 112 | 144
| | | 22 | 120 | 380 | 920 | 1890 | 3472 | 5880
| | | | 140 | 1140 | 5060 | 16380 | 43400 | 99960
| | | | | 969 | 10626 | 61425 | 251720 | 824670
| | | | | | 7084 | 98280 | 704816 | 3518592
| | | | | | | 53820 | 906192 | 7791168
| | | | | | | | 420732 | 8347680
| | | | | | | | | 3362260
|
|
