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| n | a(n) |
|---|---|
| 1 | 383021 |
| 2 | 643832706 |
| 3 | 1197873588223 |
| 4 | 2216692870846655 |
| 5 | 4089300179444311432 |
[383021,643832706,1197873588223,2216692870846655, 4089300179444311432] |