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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | -12 |
| 3 | -120 |
| 4 | -2352 |
| 5 | -75840 |
| 6 | -1649472 |
| 7 | 118634880 |
| 8 | 41344643328 |
| 9 | 9528901232640 |
| 10 | 2213829515240448 |
| 11 | 559192086549719040 |
| 12 | 156367986602421669888 |
| 13 | 48476425507418343751680 |
| 14 | 16569615994864645076533248 |
[1,0,-12,-120,-2352,-75840,-1649472,118634880, 41344643328,9528901232640,2213829515240448, 559192086549719040,156367986602421669888, 48476425507418343751680, 16569615994864645076533248] |