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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 18 |
| 3 | 748 |
| 4 | 1175726 |
| 5 | 2084933331226 |
| 6 | 4679550257895801138027326 |
| 7 | 32104015426827052599552575343053593444727211242643 |
| 8 | 1075746020696496161073757448146183844808322318757741404972782794722919539853339311824470777551030643 |
[2,18,748,1175726,2084933331226, 4679550257895801138027326, 32104015426827052599552575343053593444727211242643\ , 10757460206964961610737574481461838448083223187577\ 41404972782794722919539853339311824470777551030643\ ] |