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| n | a(n) |
|---|---|
| 1 | 55 |
| 2 | 595 |
| 3 | 5995 |
| 4 | 7779577597795 |
| 5 | 9775779559755 |
| 6 | 57575799959759975575 |
| 7 | 77777755779995957575 |
| 8 | 7577959575775997959995995979795 |
[55,595,5995,7779577597795,9775779559755, 57575799959759975575,77777755779995957575, 7577959575775997959995995979795] |