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| n | a(n) |
|---|---|
| 1 | 21 |
| 2 | 31 |
| 3 | 43 |
| 4 | 49 |
| 5 | 93 |
| 6 | 99 |
| 7 | 105 |
| 8 | 111 |
| 9 | 141 |
| 10 | 169 |
| 11 | 201 |
| 12 | 211 |
| 13 | 267 |
| 14 | 273 |
| 15 | 303 |
| 16 | 327 |
| 17 | 367 |
| 18 | 391 |
| 19 | 399 |
| 20 | 415 |
| 21 | 421 |
| 22 | 427 |
| 23 | 483 |
| 24 | 495 |
| 25 | 517 |
| 26 | 535 |
| 27 | 559 |
| 28 | 651 |
| 29 | 679 |
| 30 | 685 |
| 31 | 699 |
| 32 | 723 |
| 33 | 735 |
| 34 | 787 |
| 35 | 873 |
| 36 | 903 |
| 37 | 1029 |
| 38 | 1093 |
| 39 | 1101 |
| 40 | 1123 |
| 41 | 1189 |
| 42 | 1209 |
| 43 | 1281 |
| 44 | 1291 |
| 45 | 1309 |
| 46 | 1329 |
| 47 | 1395 |
[21,31,43,49,93,99,105,111,141,169,201,211,267, 273,303,327,367,391,399,415,421,427,483,495,517, 535,559,651,679,685,699,723,735,787,873,903,1029, 1093,1101,1123,1189,1209,1281,1291,1309,1329,1395] |