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| n | a(n) |
|---|---|
| 1 | 528 |
| 2 | 6427791 |
| 3 | 50933680120 |
| 4 | 442834241887042 |
| 5 | 3775750320744043966 |
| 6 | 32325164995795813807941 |
[528,6427791,50933680120,442834241887042, 3775750320744043966,32325164995795813807941] |