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| n | a(n) |
|---|---|
| 1 | 31 |
| 2 | 127 |
| 3 | 367 |
| 4 | 967 |
| 5 | 3727 |
| 6 | 6247 |
| 7 | 7927 |
| 8 | 11887 |
| 9 | 17167 |
| 10 | 22807 |
| 11 | 39607 |
| 12 | 72367 |
| 13 | 109567 |
| 14 | 160807 |
| 15 | 185767 |
| 16 | 323767 |
| 17 | 502687 |
| 18 | 737887 |
| 19 | 863047 |
| 20 | 885487 |
| 21 | 942847 |
| 22 | 982087 |
| 23 | 1079527 |
| 24 | 1560007 |
| 25 | 1739767 |
| 26 | 1852327 |
| 27 | 1985287 |
| 28 | 2105407 |
| 29 | 2343967 |
| 30 | 2399407 |
[31,127,367,967,3727,6247,7927,11887,17167,22807, 39607,72367,109567,160807,185767,323767,502687, 737887,863047,885487,942847,982087,1079527, 1560007,1739767,1852327,1985287,2105407,2343967, 2399407] |