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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 32 |
| 3 | -280 |
| 4 | 27520 |
| 5 | -1072896 |
| 6 | 137702528 |
| 7 | -12544190464 |
| 8 | 2268209053696 |
| 9 | -366953307820032 |
| 10 | 91839717688770560 |
| 11 | -22828783486234329088 |
| 12 | 7664698989016298979328 |
| 13 | -2683708217718933773352960 |
[1,0,32,-280,27520,-1072896,137702528, -12544190464,2268209053696,-366953307820032, 91839717688770560,-22828783486234329088, 7664698989016298979328,-2683708217718933773352960] |