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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 5 |
| 3 | 7 |
| 4 | 11 |
| 5 | 19 |
| 6 | 29 |
| 7 | 97 |
| 8 | 179 |
| 9 | 503 |
| 10 | 509 |
| 11 | 991 |
| 12 | 997 |
| 13 | 3881 |
| 14 | 7723 |
| 15 | 7727 |
| 16 | 15413 |
| 17 | 92219 |
| 18 | 92221 |
| 19 | 92227 |
| 20 | 460871 |
| 21 | 1843273 |
| 22 | 3686479 |
| 23 | 3686483 |
| 24 | 55296089 |
| 25 | 940032097 |
| 26 | 1880064101 |
| 27 | 37601280103 |
| 28 | 37601280107 |
| 29 | 75202560109 |
| 30 | 75202560113 |
| 31 | 75202560127 |
[3,5,7,11,19,29,97,179,503,509,991,997,3881,7723, 7727,15413,92219,92221,92227,460871,1843273, 3686479,3686483,55296089,940032097,1880064101, 37601280103,37601280107,75202560109,75202560113, 75202560127] |