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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 3 |
| 4 | 21 |
| 5 | 1001 |
| 6 | 24297 |
| 7 | 154359847292651 |
| 8 | 30341774437965821386991435 |
| 9 | 92319517852923871319659686774769508009256168960677900730 |
| 10 | 50934152340027691948241452572262612821964943639897156747372521002131242728356002575294796863242927131886444334117126282630281250 |
[1,1,3,21,1001,24297,154359847292651, 30341774437965821386991435, 92319517852923871319659686774769508009256168960677\ 900730, 50934152340027691948241452572262612821964943639897\ 15674737252100213124272835600257529479686324292713\ 1886444334117126282630281250] |