| n | a(n) |
|---|---|
| 0 | 11 |
| 1 | 23 |
| 2 | 149 |
| 3 | 389 |
| 4 | 6389 |
| 5 | 38669 |
| 6 | 89899 |
| 7 | 688999 |
| 8 | 4998989 |
| 9 | 46998899 |
| 10 | 288989999 |
| 11 | 2688989999 |
| 12 | 8889899999 |
| 13 | 68898899999 |
| 14 | 1488988999999 |
| 15 | 3888998899999 |
| 16 | 128889898999999 |
| 17 | 348889899899999 |
| 18 | 1888888999999999 |
| 19 | 16888888999999999 |
[11,23,149,389,6389,38669,89899,688999,4998989, 46998899,288989999,2688989999,8889899999, 68898899999,1488988999999,3888998899999, 128889898999999,348889899899999,1888888999999999, 16888888999999999] |