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| n | a(n) |
|---|---|
| 1 | 9 |
| 2 | 33 |
| 3 | 69 |
| 4 | 81 |
| 5 | 83 |
| 6 | 107 |
| 7 | 113 |
| 8 | 117 |
| 9 | 131 |
| 10 | 147 |
| 11 | 161 |
| 12 | 173 |
| 13 | 177 |
| 14 | 179 |
| 15 | 201 |
| 16 | 213 |
| 17 | 219 |
| 18 | 221 |
| 19 | 249 |
| 20 | 273 |
| 21 | 287 |
| 22 | 291 |
| 23 | 333 |
| 24 | 351 |
| 25 | 383 |
| 26 | 393 |
| 27 | 407 |
| 28 | 423 |
| 29 | 429 |
| 30 | 443 |
| 31 | 449 |
| 32 | 459 |
| 33 | 471 |
| 34 | 501 |
| 35 | 507 |
| 36 | 527 |
| 37 | 537 |
| 38 | 539 |
| 39 | 543 |
| 40 | 557 |
| 41 | 579 |
| 42 | 603 |
| 43 | 617 |
| 44 | 633 |
| 45 | 639 |
| 46 | 641 |
| 47 | 659 |
| 48 | 677 |
| 49 | 683 |
| 50 | 689 |
| 51 | 711 |
| 52 | 747 |
[9,33,69,81,83,107,113,117,131,147,161,173,177, 179,201,213,219,221,249,273,287,291,333,351,383, 393,407,423,429,443,449,459,471,501,507,527,537, 539,543,557,579,603,617,633,639,641,659,677,683, 689,711,747] |