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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 7 |
| 3 | 15 |
| 4 | 19 |
| 5 | 27 |
| 6 | 31 |
| 7 | 51 |
| 8 | 55 |
| 9 | 75 |
| 10 | 79 |
| 11 | 87 |
| 12 | 91 |
| 13 | 99 |
| 14 | 115 |
| 15 | 135 |
| 16 | 139 |
| 17 | 147 |
| 18 | 159 |
| 19 | 175 |
| 20 | 187 |
| 21 | 195 |
| 22 | 199 |
| 23 | 211 |
| 24 | 231 |
| 25 | 255 |
| 26 | 271 |
| 27 | 279 |
| 28 | 307 |
| 29 | 327 |
| 30 | 331 |
| 31 | 339 |
| 32 | 351 |
| 33 | 355 |
| 34 | 367 |
| 35 | 379 |
| 36 | 387 |
| 37 | 399 |
| 38 | 411 |
| 39 | 415 |
| 40 | 427 |
| 41 | 439 |
| 42 | 471 |
| 43 | 499 |
| 44 | 507 |
| 45 | 511 |
| 46 | 531 |
| 47 | 535 |
| 48 | 547 |
| 49 | 555 |
| 50 | 559 |
| 51 | 591 |
| 52 | 607 |
[3,7,15,19,27,31,51,55,75,79,87,91,99,115,135,139, 147,159,175,187,195,199,211,231,255,271,279,307, 327,331,339,351,355,367,379,387,399,411,415,427, 439,471,499,507,511,531,535,547,555,559,591,607] |