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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | -8 |
| 3 | 56 |
| 4 | 512 |
| 5 | -54912 |
| 6 | 2590336 |
| 7 | -69311488 |
| 8 | -3936710656 |
| 9 | 914002857984 |
| 10 | -81770855727104 |
| 11 | -2175764106870784 |
| 12 | 2405710131432685568 |
| 13 | -359158536158603378688 |
| 14 | -106865524988327138951168 |
[1,0,-8,56,512,-54912,2590336,-69311488, -3936710656,914002857984,-81770855727104, -2175764106870784,2405710131432685568, -359158536158603378688,-106865524988327138951168] |