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| n | a(n) |
|---|---|
| 1 | 4 |
| 2 | 27 |
| 3 | 14056 |
| 4 | 104751025086 |
| 5 | 14737381492157353997140846 |
| 6 | 583807825091767184801127161305581049499763751729421166 |
[4,27,14056,104751025086, 14737381492157353997140846, 58380782509176718480112716130558104949976375172942\ 1166] |