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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 11 |
| 3 | 2713 |
| 4 | 4066709 |
| 5 | 289593761 |
| 6 | 30236674150891013353640837416685668536004108580572237299601 |
| 7 | 45323907186142905348893078704293178796516046414129798590935901 |
[2,11,2713,4066709,289593761, 30236674150891013353640837416685668536004108580572\ 237299601, 45323907186142905348893078704293178796516046414129\ 798590935901] |