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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 7 |
| 3 | 172 |
| 4 | 79745 |
| 5 | 1375363126 |
| 6 | 1445639634946657 |
| 7 | 136511607703654177490168 |
| 8 | 1597074319746489837872943936307201 |
| 9 | 3049096207067719868011671739966873049880826186 |
| 10 | 1209808678412717193052533393657339738066086793611743000000001 |
[1,2,7,172,79745,1375363126,1445639634946657, 136511607703654177490168, 1597074319746489837872943936307201, 3049096207067719868011671739966873049880826186, 12098086784127171930525333936573397380660867936117\ 43000000001] |