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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 171714816 |
| 3 | 9817265089769041882465383168 |
| 4 | 351690857158733335833718073682368165890982417955022627663773696 |
[3,171714816,9817265089769041882465383168, 35169085715873333583371807368236816589098241795502\ 2627663773696] |