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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 124 |
| 3 | 12471013 |
| 4 | 12471013161922 |
| 5 | 12471013161922252831 |
| 6 | 124710131619222252831343740 |
| 7 | 124710131619222252831343740434649 |
| 8 | 124710131619222252831343740434649525558 |
[1,124,12471013,12471013161922, 12471013161922252831,124710131619222252831343740, 124710131619222252831343740434649, 124710131619222252831343740434649525558] |