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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | -1 |
| 3 | 10 |
| 4 | -159 |
| 5 | 3816 |
| 6 | -125375 |
| 7 | 5309088 |
| 8 | -278224975 |
| 9 | 17527766896 |
| 10 | -1298909663199 |
| 11 | 111339963135600 |
| 12 | -10892621058454487 |
| 13 | 1203078692663183064 |
| 14 | -148666849777064966815 |
| 15 | 20397978159874089501496 |
[1,1,-1,10,-159,3816,-125375,5309088,-278224975, 17527766896,-1298909663199,111339963135600, -10892621058454487,1203078692663183064, -148666849777064966815,20397978159874089501496] |