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| n | a(n) |
|---|---|
| 1 | 907 |
| 2 | 1039 |
| 3 | 1093 |
| 4 | 1231 |
| 5 | 1303 |
| 6 | 1531 |
| 7 | 1993 |
| 8 | 2377 |
| 9 | 2647 |
| 10 | 2713 |
| 11 | 2731 |
| 12 | 3001 |
| 13 | 3331 |
| 14 | 4003 |
| 15 | 4177 |
| 16 | 4243 |
| 17 | 4339 |
| 18 | 4447 |
[907,1039,1093,1231,1303,1531,1993,2377,2647,2713, 2731,3001,3331,4003,4177,4243,4339,4447] |