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| n | a(n) |
|---|---|
| 1 | 199991 |
| 2 | 28263828 |
| 3 | 371599993 |
| 4 | 499999994 |
| 5 | 5555555555 |
| 6 | 6666666666 |
| 7 | 7777777777 |
| 8 | 8888888888 |
| 9 | 9999999999 |
[199991,28263828,371599993,499999994,5555555555, 6666666666,7777777777,8888888888,9999999999] |