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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 0 |
| 3 | -1 |
| 4 | -8 |
| 5 | -5 |
| 6 | -50 |
| 7 | 79 |
| 8 | -696 |
| 9 | 3375 |
| 10 | -22830 |
| 11 | 156719 |
| 12 | -1205244 |
| 13 | 9952735 |
| 14 | -88770370 |
| 15 | 847488719 |
| 16 | -8633147152 |
| 17 | 93430030975 |
| 18 | -1070638898070 |
| 19 | 12950169210479 |
| 20 | -164886839860420 |
| 21 | 2204373939190495 |
| 22 | -30873660197736330 |
| 23 | 452059981437456399 |
| 24 | -6906967824497129048 |
[1,2,0,-1,-8,-5,-50,79,-696,3375,-22830,156719, -1205244,9952735,-88770370,847488719,-8633147152, 93430030975,-1070638898070,12950169210479, -164886839860420,2204373939190495, -30873660197736330,452059981437456399, -6906967824497129048] |