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| n | a(n) |
|---|---|
| 1 | 81 |
| 2 | 1231 |
| 3 | 47831 |
| 4 | 6154349 |
| 5 | 2074360867 |
| 6 | 2080964832157 |
| 7 | 4969532989834187 |
| 8 | 32710340746491266645 |
| 9 | 513084052836463355496567 |
[81,1231,47831,6154349,2074360867,2080964832157, 4969532989834187,32710340746491266645, 513084052836463355496567] |