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| n | a(n) |
|---|---|
| 1 | 5 |
| 2 | 13 |
| 3 | 17 |
| 4 | 61 |
| 5 | 89 |
| 6 | 521 |
| 7 | 2281 |
| 8 | 3217 |
| 9 | 4253 |
| 10 | 9689 |
| 11 | 9941 |
| 12 | 11213 |
| 13 | 19937 |
| 14 | 21701 |
| 15 | 23209 |
| 16 | 44497 |
| 17 | 132049 |
| 18 | 859433 |
| 19 | 1398269 |
| 20 | 2976221 |
| 21 | 3021377 |
| 22 | 6972593 |
| 23 | 13466917 |
| 24 | 30402457 |
| 25 | 32582657 |
| 26 | 42643801 |
| 27 | 43112609 |
| 28 | 57885161 |
[5,13,17,61,89,521,2281,3217,4253,9689,9941,11213, 19937,21701,23209,44497,132049,859433,1398269, 2976221,3021377,6972593,13466917,30402457, 32582657,42643801,43112609,57885161] |