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| n | a(n) |
|---|---|
| 1 | 4 |
| 2 | 6 |
| 3 | 10 |
| 4 | 15 |
| 5 | 16 |
| 6 | 24 |
| 7 | 26 |
| 8 | 32 |
| 9 | 42 |
| 10 | 72 |
| 11 | 78 |
| 12 | 81 |
| 13 | 102 |
| 14 | 111 |
| 15 | 124 |
| 16 | 168 |
| 17 | 172 |
| 18 | 182 |
| 19 | 196 |
| 20 | 205 |
| 21 | 209 |
| 22 | 212 |
| 23 | 240 |
| 24 | 243 |
| 25 | 276 |
| 26 | 299 |
| 27 | 301 |
| 28 | 308 |
| 29 | 320 |
| 30 | 326 |
| 31 | 345 |
| 32 | 357 |
| 33 | 361 |
| 34 | 412 |
| 35 | 425 |
| 36 | 426 |
| 37 | 427 |
| 38 | 429 |
| 39 | 455 |
| 40 | 477 |
| 41 | 490 |
| 42 | 494 |
| 43 | 526 |
| 44 | 564 |
| 45 | 591 |
| 46 | 605 |
| 47 | 610 |
| 48 | 637 |
| 49 | 638 |
| 50 | 645 |
| 51 | 664 |
| 52 | 670 |
| 53 | 672 |
| 54 | 682 |
| 55 | 684 |
[4,6,10,15,16,24,26,32,42,72,78,81,102,111,124, 168,172,182,196,205,209,212,240,243,276,299,301, 308,320,326,345,357,361,412,425,426,427,429,455, 477,490,494,526,564,591,605,610,637,638,645,664, 670,672,682,684] |