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| n | a(n) |
|---|---|
| 1 | -1 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 399 |
| 6 | 357857 |
| 7 | 13055867207 |
| 8 | 558545862282195466 |
| 9 | 5070602400912917604201018916608 |
| 10 | 30432527221704537086371993251530170527181380482652674 |
| 11 | 99999999999999999999999999999999999999999999999999999999999999999999968818280070033816399 |
[-1,0,0,0,399,357857,13055867207, 558545862282195466, 5070602400912917604201018916608, 30432527221704537086371993251530170527181380482652\ 674, 99999999999999999999999999999999999999999999999999\ 999999999999999999968818280070033816399] |