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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 9 |
| 2 | 96 |
| 3 | 991 |
| 4 | 9984 |
| 5 | 99975 |
| 6 | 999964 |
| 7 | 9999951 |
| 8 | 99999936 |
| 9 | 999999919 |
| 10 | 9999999900 |
| 11 | 99999999879 |
| 12 | 999999999856 |
| 13 | 9999999999831 |
| 14 | 99999999999804 |
| 15 | 999999999999775 |
| 16 | 9999999999999744 |
| 17 | 99999999999999711 |
| 18 | 999999999999999676 |
[1,9,96,991,9984,99975,999964,9999951,99999936, 999999919,9999999900,99999999879,999999999856, 9999999999831,99999999999804,999999999999775, 9999999999999744,99999999999999711, 999999999999999676] |