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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 10 |
| 2 | 2 |
| 3 | -1940 |
| 4 | -19988 |
| 5 | 560600 |
| 6 | 15400120 |
| 7 | -175631600 |
| 8 | -12320798320 |
| 9 | 14487191200 |
| 10 | 11011816030240 |
| 11 | 95920712926400 |
| 12 | -10911530551334720 |
| 13 | -221918063914793600 |
| 14 | 11682109283252497280 |
| 15 | 421292676523621792000 |
| 16 | -12959773881144953081600 |
[1,10,2,-1940,-19988,560600,15400120,-175631600, -12320798320,14487191200,11011816030240, 95920712926400,-10911530551334720, -221918063914793600,11682109283252497280, 421292676523621792000,-12959773881144953081600] |