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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 3 |
| 3 | 5 |
| 4 | 5 |
| 5 | 17 |
| 6 | 107 |
| 7 | 107 |
| 8 | 107 |
| 9 | 107 |
| 10 | 82954517 |
| 11 | 82954517 |
| 12 | 79017245897 |
| 13 | 79017245897 |
| 14 | 1490524895687 |
| 15 | 13101487760627087 |
[2,3,5,5,17,107,107,107,107,82954517,82954517, 79017245897,79017245897,1490524895687, 13101487760627087] |