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| n | a(n) |
|---|---|
| 1 | 177050 |
| 2 | 77255835 |
| 3 | 39435964246 |
| 4 | 16272143720320 |
| 5 | 6208409977276051 |
[177050,77255835,39435964246,16272143720320, 6208409977276051] |