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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 7 |
| 3 | 117 |
| 4 | 28231 |
| 5 | 934841727 |
| 6 | 1391154929853413822 |
| 7 | 3358221400639080017571595039208647108 |
| 8 | 84149630763494298099512446622134485046922136023978562834130778814722933257 |
[2,7,117,28231,934841727,1391154929853413822, 3358221400639080017571595039208647108, 84149630763494298099512446622134485046922136023978\ 562834130778814722933257] |