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| n | a(n) |
|---|---|
| 1 | 19 |
| 2 | 23 |
| 3 | 37 |
| 4 | 43 |
| 5 | 97 |
| 6 | 127 |
| 7 | 223 |
| 8 | 499 |
| 9 | 673 |
| 10 | 1213 |
| 11 | 2309 |
| 12 | 2729 |
| 13 | 6089 |
| 14 | 6269 |
| 15 | 7589 |
| 16 | 8969 |
| 17 | 9239 |
| 18 | 9281 |
| 19 | 10709 |
| 20 | 11549 |
| 21 | 11969 |
| 22 | 12539 |
| 23 | 13397 |
| 24 | 14321 |
| 25 | 15329 |
| 26 | 16829 |
| 27 | 17489 |
| 28 | 18059 |
| 29 | 19139 |
| 30 | 19379 |
| 31 | 19469 |
| 32 | 19889 |
| 33 | 20747 |
| 34 | 21317 |
| 35 | 21839 |
| 36 | 22109 |
| 37 | 22619 |
| 38 | 23369 |
| 39 | 23561 |
| 40 | 24179 |
[19,23,37,43,97,127,223,499,673,1213,2309,2729, 6089,6269,7589,8969,9239,9281,10709,11549,11969, 12539,13397,14321,15329,16829,17489,18059,19139, 19379,19469,19889,20747,21317,21839,22109,22619, 23369,23561,24179] |