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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 55 |
| 2 | 686 |
| 3 | 6996 |
| 4 | 79897 |
| 5 | 799997 |
| 6 | 8998998 |
| 7 | 89999998 |
| 8 | 999989999 |
| 9 | 9999999999 |
[0,55,686,6996,79897,799997,8998998,89999998, 999989999,9999999999] |