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| n | a(n) |
|---|---|
| 1 | 12 |
| 2 | 34 |
| 3 | 567 |
| 4 | 8 |
| 5 | 90 |
| 6 | 12 |
| 7 | 34567890 |
| 8 | 123456 |
| 9 | 789012 |
| 10 | 34567890 |
| 11 | 123456789012345678901 |
[12,34,567,8,90,12,34567890,123456,789012, 34567890,123456789012345678901] |