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| n | a(n) |
|---|---|
| 1 | 5 |
| 2 | 79 |
| 3 | 1831 |
| 4 | 1856917 |
| 5 | 517136788981 |
| 6 | 25309896984298197131551 |
| 7 | 9737146484866113825954170751740726870607451 |
[5,79,1831,1856917,517136788981, 25309896984298197131551, 9737146484866113825954170751740726870607451] |