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| n | a(n) |
|---|---|
| 1 | 6 |
| 2 | 15 |
| 3 | 21 |
| 4 | 33 |
| 5 | 39 |
| 6 | 51 |
| 7 | 57 |
| 8 | 69 |
| 9 | 87 |
| 10 | 93 |
| 11 | 111 |
| 12 | 123 |
| 13 | 129 |
| 14 | 141 |
| 15 | 159 |
| 16 | 175 |
| 17 | 177 |
| 18 | 183 |
| 19 | 201 |
| 20 | 213 |
| 21 | 219 |
| 22 | 237 |
| 23 | 249 |
| 24 | 267 |
| 25 | 291 |
| 26 | 303 |
| 27 | 309 |
| 28 | 321 |
| 29 | 327 |
| 30 | 339 |
| 31 | 381 |
| 32 | 393 |
| 33 | 411 |
| 34 | 417 |
| 35 | 447 |
| 36 | 453 |
| 37 | 471 |
| 38 | 489 |
| 39 | 501 |
| 40 | 519 |
| 41 | 537 |
| 42 | 543 |
| 43 | 573 |
| 44 | 579 |
| 45 | 591 |
| 46 | 597 |
| 47 | 633 |
| 48 | 669 |
| 49 | 681 |
| 50 | 687 |
| 51 | 699 |
| 52 | 717 |
| 53 | 723 |
| 54 | 753 |
[6,15,21,33,39,51,57,69,87,93,111,123,129,141,159, 175,177,183,201,213,219,237,249,267,291,303,309, 321,327,339,381,393,411,417,447,453,471,489,501, 519,537,543,573,579,591,597,633,669,681,687,699, 717,723,753] |