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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 9 |
| 2 | 139 |
| 3 | 2211 |
| 4 | 35233 |
| 5 | 561513 |
| 6 | 8948971 |
| 7 | 142622019 |
| 8 | 2273003329 |
| 9 | 36225431241 |
| 10 | 577333896523 |
| 11 | 9201116913123 |
| 12 | 146640536713441 |
| 13 | 2337047470501929 |
| 14 | 37246118991317419 |
| 15 | 593600856390576771 |
| 16 | 9460367583257910913 |
| 17 | 150772280475735997833 |
| 18 | 2402896120028518054411 |
[1,9,139,2211,35233,561513,8948971,142622019, 2273003329,36225431241,577333896523,9201116913123, 146640536713441,2337047470501929, 37246118991317419,593600856390576771, 9460367583257910913,150772280475735997833, 2402896120028518054411] |