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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 9 |
| 2 | 92 |
| 3 | 973 |
| 4 | 9936 |
| 5 | 99875 |
| 6 | 999784 |
| 7 | 9999657 |
| 8 | 99999488 |
| 9 | 999999271 |
| 10 | 9999999000 |
| 11 | 99999998669 |
| 12 | 999999998272 |
| 13 | 9999999997803 |
| 14 | 99999999997256 |
| 15 | 999999999996625 |
| 16 | 9999999999995904 |
| 17 | 99999999999995087 |
| 18 | 999999999999994168 |
| 19 | 9999999999999993141 |
| 20 | 99999999999999992000 |
[1,9,92,973,9936,99875,999784,9999657,99999488, 999999271,9999999000,99999998669,999999998272, 9999999997803,99999999997256,999999999996625, 9999999999995904,99999999999995087, 999999999999994168,9999999999999993141, 99999999999999992000] |