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| n | a(n) |
|---|---|
| 1 | 3074677333 |
| 2 | 5804976472057 |
| 3 | 15261911634884845 |
| 4 | 45601045546133880817 |
| 5 | 143131084226139999444805 |
[3074677333,5804976472057,15261911634884845, 45601045546133880817,143131084226139999444805] |