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| n | a(n) |
|---|---|
| 1 | 287769879 |
| 2 | 659741463420 |
| 3 | 1270931982853879 |
| 4 | 3094892136980310870 |
| 5 | 8974005118250282637773 |
[287769879,659741463420,1270931982853879, 3094892136980310870,8974005118250282637773] |