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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 3 |
| 3 | 27 |
| 4 | 1976 |
| 5 | 5066295 |
| 6 | 30938196963071 |
| 7 | 1046281665980548868071666945 |
| 8 | 2694045416033001453689961948450775927564028502803056062 |
[2,3,27,1976,5066295,30938196963071, 1046281665980548868071666945, 26940454160330014536899619484507759275640285028030\ 56062] |