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| n | a(n) |
|---|---|
| 1 | 19 |
| 2 | 29 |
| 3 | 59 |
| 4 | 79 |
| 5 | 89 |
| 6 | 199 |
| 7 | 499 |
| 8 | 599 |
| 9 | 1999 |
| 10 | 2999 |
| 11 | 4999 |
| 12 | 8999 |
| 13 | 49999 |
| 14 | 59999 |
| 15 | 79999 |
| 16 | 199999 |
| 17 | 599999 |
| 18 | 799999 |
| 19 | 2999999 |
| 20 | 4999999 |
| 21 | 19999999 |
| 22 | 29999999 |
| 23 | 59999999 |
| 24 | 89999999 |
| 25 | 799999999 |
| 26 | 59999999999 |
| 27 | 79999999999 |
| 28 | 59999999999999 |
| 29 | 499999999999999 |
| 30 | 29999999999999999999 |
[19,29,59,79,89,199,499,599,1999,2999,4999,8999, 49999,59999,79999,199999,599999,799999,2999999, 4999999,19999999,29999999,59999999,89999999, 799999999,59999999999,79999999999,59999999999999, 499999999999999,29999999999999999999] |