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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 3 |
| 3 | 17 |
| 4 | 37 |
| 5 | 2708192040014184559945134363758220403329915059847434832829218817 |
[2,3,17,37, 27081920400141845599451343637582204033299150598474\ 34832829218817] |