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| n | a(n) |
|---|---|
| 1 | 11 |
| 2 | 99999 |
| 3 | 111111111 |
| 4 | 9999999999 |
| 5 | 11111111111111111111111111111111111111 |
| 6 | 99999999999999999999999999999999999999999999999 |
[11,99999,111111111,9999999999, 11111111111111111111111111111111111111, 99999999999999999999999999999999999999999999999] |