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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 12 |
| 3 | 0 |
| 4 | 17360 |
| 5 | -241920 |
| 6 | 186158016 |
| 7 | -11413642240 |
| 8 | 7726026430720 |
| 9 | -1212323504480256 |
| 10 | 892608906281741312 |
| 11 | -274005660019568705536 |
| 12 | 234514059257417538031616 |
| 13 | -119571044071522301122641920 |
[1,0,12,0,17360,-241920,186158016,-11413642240, 7726026430720,-1212323504480256, 892608906281741312,-274005660019568705536, 234514059257417538031616, -119571044071522301122641920] |