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| n | a(n) |
|---|---|
| 2 | 79 |
| 3 | 769 |
| 4 | 9679 |
| 5 | 98999 |
| 6 | 995699 |
| 7 | 9975899 |
| 8 | 99967999 |
| 9 | 999548999 |
| 10 | 9999049999 |
| 11 | 99994169999 |
| 12 | 999989299999 |
| 13 | 9999954799999 |
| 14 | 99999904999999 |
| 15 | 999999778999999 |
| 16 | 9999999349999999 |
| 17 | 99999994999999999 |
| 18 | 999999971189999999 |
| 19 | 9999999950999999999 |
| 20 | 99999999632999999999 |
[79,769,9679,98999,995699,9975899,99967999, 999548999,9999049999,99994169999,999989299999, 9999954799999,99999904999999,999999778999999, 9999999349999999,99999994999999999, 999999971189999999,9999999950999999999, 99999999632999999999] |