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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | -12 |
| 2 | -1368 |
| 3 | -779184 |
| 4 | -260251104 |
| 5 | -120710392488 |
| 6 | -51881715871776 |
| 7 | -24129355507367136 |
| 8 | -11210568318996090624 |
| 9 | -5342692661136883228860 |
| 10 | -2567906908021088206807248 |
| 11 | -1249094126109188331384940944 |
| 12 | -612254304549600491293149962880 |
[1,-12,-1368,-779184,-260251104,-120710392488, -51881715871776,-24129355507367136, -11210568318996090624,-5342692661136883228860, -2567906908021088206807248, -1249094126109188331384940944, -612254304549600491293149962880] |