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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 7 |
| 3 | 15 |
| 4 | 23 |
| 5 | 27 |
| 6 | 175 |
| 7 | 259 |
| 8 | 391 |
| 9 | 607 |
| 10 | 679 |
| 11 | 863 |
| 12 | 927 |
| 13 | 999 |
| 14 | 1339 |
| 15 | 1371 |
| 16 | 1555 |
| 17 | 2103 |
| 18 | 2151 |
| 19 | 2715 |
| 20 | 5619 |
| 21 | 6411 |
| 22 | 7055 |
| 23 | 12927 |
| 24 | 19015 |
| 25 | 26095 |
| 26 | 42523 |
| 27 | 45719 |
| 28 | 55519 |
| 29 | 70971 |
| 30 | 87663 |
| 31 | 176007 |
| 32 | 243391 |
| 33 | 287083 |
| 34 | 544887 |
| 35 | 696327 |
| 36 | 902995 |
| 37 | 1041223 |
| 38 | 1061675 |
| 39 | 1218211 |
| 40 | 1355595 |
[3,7,15,23,27,175,259,391,607,679,863,927,999, 1339,1371,1555,2103,2151,2715,5619,6411,7055, 12927,19015,26095,42523,45719,55519,70971,87663, 176007,243391,287083,544887,696327,902995,1041223, 1061675,1218211,1355595] |