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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 8743 |
| 5 | 71193 |
| 6 | 640737 |
| 7 | 5906061 |
| 8 | 65624979 |
| 9 | 590624811 |
| 10 | 5498542791 |
| 11 | 55995364341 |
| 12 | 549871699041 |
| 13 | 5582882097891 |
| 14 | 55828827410391 |
| 15 | 542546715730761 |
| 16 | 5469955867029591 |
| 17 | 53226216007355979 |
| 18 | 532262221390168479 |
| 19 | 5300249369031696429 |
| 20 | 52602977416561263909 |
| 21 | 531074469279114815229 |
[1,0,0,0,8743,71193,640737,5906061,65624979, 590624811,5498542791,55995364341,549871699041, 5582882097891,55828827410391,542546715730761, 5469955867029591,53226216007355979, 532262221390168479,5300249369031696429, 52602977416561263909,531074469279114815229] |