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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | -12 |
| 2 | 1568 |
| 3 | -445632 |
| 4 | 76844288 |
| 5 | 278739068928 |
| 6 | -467851397312512 |
| 7 | -2679102291371999232 |
| 8 | 13369295760767407751168 |
| 9 | 198192229563606535497842688 |
| 10 | -1400852802790123139561996419072 |
| 11 | -65350779506647538962325382377766912 |
[1,-12,1568,-445632,76844288,278739068928, -467851397312512,-2679102291371999232, 13369295760767407751168, 198192229563606535497842688, -1400852802790123139561996419072, -65350779506647538962325382377766912] |