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| n | a(n) |
|---|---|
| 1 | 31 |
| 2 | 71 |
| 3 | 158 |
| 4 | 206 |
| 5 | 383 |
| 6 | 501 |
| 7 | 503 |
| 8 | 581 |
| 9 | 743 |
| 10 | 789 |
| 11 | 869 |
| 12 | 917 |
| 13 | 983 |
| 14 | 989 |
| 15 | 1333 |
| 16 | 1349 |
| 17 | 1437 |
| 18 | 2573 |
| 19 | 3093 |
| 20 | 6677 |
| 21 | 14693 |
[31,71,158,206,383,501,503,581,743,789,869,917, 983,989,1333,1349,1437,2573,3093,6677,14693] |