| n | a(n) |
|---|---|
| 3 | 32 |
| 4 | 18 |
| 5 | 3472 |
| 6 | 10993850 |
| 7 | 2129428800 |
| 8 | 546 |
| 9 | 5064320 |
| 10 | 105263157894736842 |
| 11 | 380 |
| 12 | 64609423538 |
| 13 | 11424 |
| 14 | 1673230 |
| 15 | 58774271029236501660840264682112 |
| 16 | 67650 |
| 17 | 122181448512 |
| 18 | 1666 |
| 19 | 586081355679130611935159482937228562988190880 |
| 20 | 210051282051282 |
| 21 | 13571630704729343835960800 |
[32,18,3472,10993850,2129428800,546,5064320, 105263157894736842,380,64609423538,11424,1673230, 58774271029236501660840264682112,67650, 122181448512,1666, 586081355679130611935159482937228562988190880, 210051282051282,13571630704729343835960800] |