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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 3 |
| 3 | 5 |
| 4 | 7 |
| 5 | 11 |
| 6 | 13 |
| 7 | 17 |
| 8 | 19 |
| 9 | 31 |
| 10 | 41 |
| 11 | 43 |
| 12 | 73 |
| 13 | 127 |
| 14 | 151 |
| 15 | 241 |
| 16 | 257 |
| 17 | 331 |
| 18 | 337 |
| 19 | 683 |
| 20 | 2731 |
| 21 | 5419 |
| 22 | 8191 |
| 23 | 43691 |
| 24 | 61681 |
| 25 | 65537 |
| 26 | 87211 |
| 27 | 131071 |
| 28 | 174763 |
| 29 | 262657 |
| 30 | 524287 |
| 31 | 599479 |
| 32 | 2796203 |
| 33 | 15790321 |
| 34 | 18837001 |
| 35 | 22366891 |
| 36 | 715827883 |
| 37 | 2147483647 |
| 38 | 4278255361 |
[2,3,5,7,11,13,17,19,31,41,43,73,127,151,241,257, 331,337,683,2731,5419,8191,43691,61681,65537, 87211,131071,174763,262657,524287,599479,2796203, 15790321,18837001,22366891,715827883,2147483647, 4278255361] |