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| n | a(n) |
|---|---|
| 1 | 799999 |
| 2 | 998989 |
| 3 | 999979 |
| 4 | 1789999 |
| 5 | 1798999 |
| 6 | 1979899 |
| 7 | 1989979 |
| 8 | 1997899 |
| 9 | 1999969 |
| 10 | 2599999 |
| 11 | 2699989 |
| 12 | 2797999 |
| 13 | 2798899 |
| 14 | 2798989 |
| 15 | 2878999 |
| 16 | 2889979 |
| 17 | 2897989 |
| 18 | 2898979 |
| 19 | 2969899 |
| 20 | 2979997 |
| 21 | 2986999 |
| 22 | 2987989 |
| 23 | 2989879 |
| 24 | 2995999 |
| 25 | 2996899 |
| 26 | 2997997 |
| 27 | 3499999 |
| 28 | 3599899 |
| 29 | 3679999 |
| 30 | 3788989 |
| 31 | 3789889 |
[799999,998989,999979,1789999,1798999,1979899, 1989979,1997899,1999969,2599999,2699989,2797999, 2798899,2798989,2878999,2889979,2897989,2898979, 2969899,2979997,2986999,2987989,2989879,2995999, 2996899,2997997,3499999,3599899,3679999,3788989, 3789889] |