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| n | a(n) |
|---|---|
| 1 | 19 |
| 2 | 199 |
| 3 | 1999 |
| 4 | 49999 |
| 5 | 199999 |
| 6 | 2999999 |
| 7 | 19999999 |
| 8 | 799999999 |
| 9 | 10999999999 |
| 10 | 59999999999 |
| 11 | 1099999999999 |
| 12 | 34999999999999 |
| 13 | 59999999999999 |
| 14 | 499999999999999 |
| 15 | 14999999999999999 |
| 16 | 139999999999999999 |
[19,199,1999,49999,199999,2999999,19999999, 799999999,10999999999,59999999999,1099999999999, 34999999999999,59999999999999,499999999999999, 14999999999999999,139999999999999999] |