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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 3 |
| 3 | 5 |
| 4 | 7 |
| 5 | 13 |
| 6 | 17 |
| 7 | 19 |
| 8 | 31 |
| 9 | 61 |
| 10 | 89 |
| 11 | 107 |
| 12 | 127 |
| 13 | 521 |
| 14 | 607 |
| 15 | 1279 |
| 16 | 2203 |
| 17 | 2281 |
| 18 | 3217 |
| 19 | 4253 |
| 20 | 4423 |
| 21 | 9689 |
| 22 | 9941 |
| 23 | 11213 |
| 24 | 19937 |
| 25 | 21701 |
| 26 | 23209 |
| 27 | 44497 |
| 28 | 86243 |
| 29 | 110503 |
| 30 | 132049 |
| 31 | 216091 |
| 32 | 756839 |
| 33 | 859433 |
| 34 | 1257787 |
| 35 | 1398269 |
| 36 | 2976221 |
| 37 | 3021377 |
| 38 | 6972593 |
| 39 | 13466917 |
| 40 | 20996011 |
| 41 | 24036583 |
| 42 | 25964951 |
| 43 | 30402457 |
| 44 | 32582657 |
| 45 | 37156667 |
| 46 | 42643801 |
| 47 | 43112609 |
| 48 | 57885161 |
[2,3,5,7,13,17,19,31,61,89,107,127,521,607,1279, 2203,2281,3217,4253,4423,9689,9941,11213,19937, 21701,23209,44497,86243,110503,132049,216091, 756839,859433,1257787,1398269,2976221,3021377, 6972593,13466917,20996011,24036583,25964951, 30402457,32582657,37156667,42643801,43112609, 57885161] |