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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 19 |
| 3 | 188 |
| 4 | 1861 |
| 5 | 18422 |
| 6 | 182359 |
| 7 | 1805168 |
| 8 | 17869321 |
| 9 | 176888042 |
| 10 | 1751011099 |
| 11 | 17333222948 |
| 12 | 171581218381 |
| 13 | 1698478960862 |
| 14 | 16813208390239 |
| 15 | 166433604941528 |
| 16 | 1647522841025041 |
| 17 | 16308794805308882 |
| 18 | 161440425212063779 |
| 19 | 1598095457315328908 |
| 20 | 15819514147941225301 |
[1,2,19,188,1861,18422,182359,1805168,17869321, 176888042,1751011099,17333222948,171581218381, 1698478960862,16813208390239,166433604941528, 1647522841025041,16308794805308882, 161440425212063779,1598095457315328908, 15819514147941225301] |