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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 3 |
| 3 | 23 |
| 4 | 2479 |
| 5 | 73743071 |
| 6 | 151050438420815295 |
| 7 | 1360791906900646753867474206897715071 |
| 8 | 228824044090659455778900855050322128002759787305348791014476408721956007679 |
[1,3,23,2479,73743071,151050438420815295, 1360791906900646753867474206897715071, 22882404409065945577890085505032212800275978730534\ 8791014476408721956007679] |