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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 0 |
| 2 | 1 |
| 3 | -14 |
| 4 | 336 |
| 5 | -1408 |
| 6 | 256256 |
| 7 | 14746368 |
| 8 | 1766772736 |
| 9 | 242121048064 |
| 10 | 41267065061376 |
| 11 | 8461792420167680 |
| 12 | 2057680174397259776 |
| 13 | 585429994601202057216 |
| 14 | 192659868531986620481536 |
| 15 | 72616356304572571212316672 |
| 16 | 31078397531081274526066016256 |
[0,0,1,-14,336,-1408,256256,14746368,1766772736, 242121048064,41267065061376,8461792420167680, 2057680174397259776,585429994601202057216, 192659868531986620481536, 72616356304572571212316672, 31078397531081274526066016256] |