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| n | a(n) |
|---|---|
| 2 | 99 |
| 3 | 987 |
| 4 | 9951 |
| 5 | 99939 |
| 6 | 996983 |
| 7 | 9981153 |
| 8 | 99745289 |
| 9 | 981196517 |
| 10 | 9927756573 |
| 11 | 99243774623 |
| 12 | 992617385333 |
| 13 | 9751651447377 |
[99,987,9951,99939,996983,9981153,99745289, 981196517,9927756573,99243774623,992617385333, 9751651447377] |