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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | -5 |
| 4 | -95 |
| 5 | -959 |
| 6 | -5159 |
| 7 | 69721 |
| 8 | 3113377 |
| 9 | 64493857 |
| 10 | 654012721 |
| 11 | -13761498959 |
| 12 | -1013114081759 |
| 13 | -32273321679455 |
| 14 | -492845589685175 |
| 15 | 13357113599586121 |
| 16 | 1410278045569310401 |
| 17 | 61239473424756703681 |
| 18 | 1270682827211021594977 |
| 19 | -40402942687262364034463 |
[1,1,1,-5,-95,-959,-5159,69721,3113377,64493857, 654012721,-13761498959,-1013114081759, -32273321679455,-492845589685175, 13357113599586121,1410278045569310401, 61239473424756703681,1270682827211021594977, -40402942687262364034463] |