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| n | a(n) |
|---|---|
| 1 | 27 |
| 2 | 729 |
| 3 | 1973 |
| 4 | 78213 |
| 5 | 1044311 |
| 6 | 22982345 |
| 7 | 502081983 |
| 8 | 9622736121 |
| 9 | 218268103915 |
| 10 | 6831466723781 |
| 11 | 157202982490683 |
| 12 | 3596007897529929 |
[27,729,1973,78213,1044311,22982345,502081983, 9622736121,218268103915,6831466723781, 157202982490683,3596007897529929] |