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| n | a(n) |
|---|---|
| 1 | -30 |
| 2 | 6660 |
| 3 | -1536120 |
| 4 | 354476040 |
| 5 | -81800478900 |
| 6 | 18876653594640 |
| 7 | -4356063194112240 |
| 8 | 1005225129672310800 |
| 9 | -231970363216834560390 |
| 10 | 53530545369975222475800 |
| 11 | -12352954264801690636800360 |
| 12 | 2850624405442199478575792160 |
[-30,6660,-1536120,354476040,-81800478900, 18876653594640,-4356063194112240, 1005225129672310800,-231970363216834560390, 53530545369975222475800, -12352954264801690636800360, 2850624405442199478575792160] |