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| n | a(n) |
|---|---|
| 1 | 9 |
| 2 | 99 |
| 3 | 9009 |
| 4 | 99099 |
| 5 | 44990946 |
| 6 | 494900406 |
| 7 | 4688686446444 |
| 8 | 404989980498046944 |
| 9 | 44090684496040044064666464 |
| 10 | 88060080898094990484996406446844608 |
[9,99,9009,99099,44990946,494900406,4688686446444, 404989980498046944,44090684496040044064666464, 88060080898094990484996406446844608] |