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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 0 |
| 3 | -1 |
| 4 | 4 |
| 5 | -11 |
| 6 | -186 |
| 7 | 10823 |
| 8 | -492536 |
| 9 | 5125897 |
| 10 | 10381552650 |
| 11 | -6405856963573 |
| 12 | 3302055158456332 |
| 13 | 2338316177882689549 |
| 14 | -30991279275364493410290 |
| 15 | 224870687441604081662836751 |
| 16 | -1045565401111374322223949545456 |
| 17 | -50507259999091315834370754855632879 |
[0,1,0,-1,4,-11,-186,10823,-492536,5125897, 10381552650,-6405856963573,3302055158456332, 2338316177882689549,-30991279275364493410290, 224870687441604081662836751, -1045565401111374322223949545456, -50507259999091315834370754855632879] |