The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 12 |
| 2 | 172800 |
| 3 | 1536288768000 |
| 4 | 16189465114548633600000 |
| 5 | 322110526445545505917029580800000000 |
| 6 | 17555281051920416386104936570114748195012608000000000 |
| 7 | 3580285185706909590176164870311607533516764550107699116769280000000000000 |
[0,12,172800,1536288768000, 16189465114548633600000, 322110526445545505917029580800000000, 17555281051920416386104936570114748195012608000000\ 000, 35802851857069095901761648703116075335167645501076\ 99116769280000000000000] |