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| n | a(n) |
|---|---|
| 1 | 7 |
| 2 | 11 |
| 3 | 13 |
| 4 | 19 |
| 5 | 31 |
| 6 | 71 |
| 7 | 127 |
| 8 | 379 |
| 9 | 491 |
| 10 | 2633 |
| 11 | 2659 |
| 12 | 8191 |
| 13 | 13249 |
| 14 | 26893 |
| 15 | 70687 |
| 16 | 74597 |
| 17 | 87211 |
| 18 | 131071 |
| 19 | 184511 |
| 20 | 524287 |
| 21 | 642581 |
| 22 | 1897121 |
| 23 | 2676301 |
| 24 | 2703739 |
| 25 | 15456151 |
| 26 | 52368101 |
| 27 | 102785339 |
| 28 | 126233057 |
| 29 | 193481677 |
| 30 | 856645921 |
| 31 | 1552107133 |
| 32 | 2147483647 |
| 33 | 2935442621 |
| 34 | 3668158729 |
[7,11,13,19,31,71,127,379,491,2633,2659,8191, 13249,26893,70687,74597,87211,131071,184511, 524287,642581,1897121,2676301,2703739,15456151, 52368101,102785339,126233057,193481677,856645921, 1552107133,2147483647,2935442621,3668158729] |