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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 3 |
| 3 | 13 |
| 4 | 41 |
| 5 | 43 |
| 6 | 109 |
| 7 | 137 |
| 8 | 167 |
| 9 | 181 |
| 10 | 199 |
| 11 | 307 |
| 12 | 373 |
| 13 | 421 |
| 14 | 491 |
| 15 | 587 |
| 16 | 661 |
| 17 | 1009 |
| 18 | 1097 |
| 19 | 1117 |
| 20 | 1373 |
| 21 | 1471 |
| 22 | 1483 |
| 23 | 1601 |
| 24 | 1607 |
| 25 | 1787 |
| 26 | 1913 |
| 27 | 2053 |
| 28 | 2089 |
| 29 | 2203 |
| 30 | 2267 |
| 31 | 2591 |
| 32 | 2819 |
| 33 | 2953 |
| 34 | 3191 |
| 35 | 3361 |
| 36 | 3623 |
| 37 | 3691 |
| 38 | 3779 |
| 39 | 3877 |
| 40 | 4051 |
[2,3,13,41,43,109,137,167,181,199,307,373,421,491, 587,661,1009,1097,1117,1373,1471,1483,1601,1607, 1787,1913,2053,2089,2203,2267,2591,2819,2953,3191, 3361,3623,3691,3779,3877,4051] |