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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 7 |
| 3 | 31 |
| 4 | 6367 |
| 5 | 925189 |
| 6 | 107197144969 |
| 7 | 93402566446301441282188479643762853393 |
| 8 | 3661745072013869917446592871282724637510478109647679973 |
[2,7,31,6367,925189,107197144969, 93402566446301441282188479643762853393, 36617450720138699174465928712827246375104781096476\ 79973] |