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| n | a(n) |
|---|---|
| 1 | 18611050 |
| 2 | 25625942242 |
| 3 | 36143110498108 |
| 4 | 50708343182050686 |
| 5 | 71377927265924630008 |
[18611050,25625942242,36143110498108, 50708343182050686,71377927265924630008] |