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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | -12 |
| 3 | -240 |
| 4 | -5936 |
| 5 | -155520 |
| 6 | -65472 |
| 7 | 981903104 |
| 8 | 223580862720 |
| 9 | 46255608778752 |
| 10 | 10060678641587200 |
| 11 | 2368138744630923264 |
| 12 | 601490101481648443392 |
| 13 | 161192778898870464512000 |
| 14 | 43208403753541588946141184 |
[1,0,-12,-240,-5936,-155520,-65472,981903104, 223580862720,46255608778752,10060678641587200, 2368138744630923264,601490101481648443392, 161192778898870464512000, 43208403753541588946141184] |