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| n | a(n) |
|---|---|
| 1 | 21 |
| 2 | 33 |
| 3 | 57 |
| 4 | 63 |
| 5 | 69 |
| 6 | 85 |
| 7 | 93 |
| 8 | 99 |
| 9 | 105 |
| 10 | 129 |
| 11 | 133 |
| 12 | 145 |
| 13 | 147 |
| 14 | 171 |
| 15 | 177 |
| 16 | 189 |
| 17 | 195 |
| 18 | 205 |
| 19 | 207 |
| 20 | 213 |
| 21 | 217 |
| 22 | 231 |
| 23 | 237 |
| 24 | 249 |
| 25 | 253 |
| 26 | 265 |
| 27 | 279 |
| 28 | 297 |
| 29 | 309 |
| 30 | 315 |
| 31 | 363 |
| 32 | 387 |
| 33 | 393 |
| 34 | 417 |
| 35 | 425 |
| 36 | 441 |
| 37 | 445 |
| 38 | 465 |
| 39 | 469 |
| 40 | 483 |
| 41 | 489 |
| 42 | 493 |
| 43 | 505 |
| 44 | 513 |
| 45 | 517 |
| 46 | 525 |
| 47 | 531 |
| 48 | 553 |
| 49 | 565 |
| 50 | 567 |
| 51 | 573 |
| 52 | 585 |
| 53 | 597 |
[21,33,57,63,69,85,93,99,105,129,133,145,147,171, 177,189,195,205,207,213,217,231,237,249,253,265, 279,297,309,315,363,387,393,417,425,441,445,465, 469,483,489,493,505,513,517,525,531,553,565,567, 573,585,597] |