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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 8 |
| 3 | -392 |
| 4 | 20096 |
| 5 | -1754368 |
| 6 | 241340032 |
| 7 | -44833033216 |
| 8 | 10840711614464 |
| 9 | -3348758074142720 |
| 10 | 1285112610745352192 |
| 11 | -598690046386495291392 |
| 12 | 332953969072425739124736 |
| 13 | -217949438999618554495500288 |
[1,0,8,-392,20096,-1754368,241340032,-44833033216, 10840711614464,-3348758074142720, 1285112610745352192,-598690046386495291392, 332953969072425739124736, -217949438999618554495500288] |