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| n | a(n) |
|---|---|
| 1 | 7 |
| 2 | 11 |
| 3 | 19 |
| 4 | 71 |
| 5 | 79 |
| 6 | 131 |
| 7 | 1167 |
| 8 | 1191 |
| 9 | 6771 |
| 10 | 12627 |
| 11 | 17947 |
| 12 | 20079 |
| 13 | 26347 |
| 14 | 40327 |
| 15 | 41231 |
| 16 | 69379 |
| 17 | 109587 |
| 18 | 193559 |
| 19 | 212451 |
| 20 | 499391 |
| 21 | 783831 |
[7,11,19,71,79,131,1167,1191,6771,12627,17947, 20079,26347,40327,41231,69379,109587,193559, 212451,499391,783831] |