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| n | a(n) |
|---|---|
| 1 | 172142801 |
| 2 | 79823385565 |
| 3 | 35423389400148 |
| 4 | 16174152113717987 |
| 5 | 7381886136632779297 |
| 6 | 3370511547179611607654 |
[172142801,79823385565,35423389400148, 16174152113717987,7381886136632779297, 3370511547179611607654] |