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| n | a(n) |
|---|---|
| 1 | 7 |
| 2 | 11 |
| 3 | 17 |
| 4 | 31 |
| 5 | 37 |
| 6 | 73 |
| 7 | 271 |
| 8 | 331 |
| 9 | 359 |
| 10 | 373 |
| 11 | 673 |
| 12 | 733 |
| 13 | 1033 |
| 14 | 2297 |
| 15 | 3119 |
| 16 | 3461 |
| 17 | 3923 |
| 18 | 5323 |
| 19 | 5381 |
| 20 | 5419 |
| 21 | 6073 |
| 22 | 6353 |
| 23 | 9103 |
| 24 | 9887 |
| 25 | 18289 |
| 26 | 23549 |
| 27 | 25349 |
| 28 | 31333 |
| 29 | 32933 |
| 30 | 33349 |
| 31 | 35747 |
| 32 | 37339 |
| 33 | 37361 |
| 34 | 37489 |
| 35 | 47533 |
| 36 | 84299 |
| 37 | 92333 |
| 38 | 93241 |
| 39 | 95093 |
| 40 | 98491 |
| 41 | 133733 |
| 42 | 136333 |
| 43 | 139333 |
[7,11,17,31,37,73,271,331,359,373,673,733,1033, 2297,3119,3461,3923,5323,5381,5419,6073,6353,9103, 9887,18289,23549,25349,31333,32933,33349,35747, 37339,37361,37489,47533,84299,92333,93241,95093, 98491,133733,136333,139333] |