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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 5 |
| 3 | 7 |
| 4 | 39 |
| 5 | 47 |
| 6 | 111 |
| 7 | 127 |
| 8 | 1151 |
| 9 | 1279 |
| 10 | 2815 |
| 11 | 3071 |
| 12 | 13311 |
| 13 | 14335 |
| 14 | 30719 |
| 15 | 32767 |
| 16 | 557055 |
| 17 | 589823 |
| 18 | 1245183 |
| 19 | 1310719 |
| 20 | 5505023 |
| 21 | 5767167 |
| 22 | 12058623 |
| 23 | 12582911 |
| 24 | 104857599 |
| 25 | 109051903 |
| 26 | 226492415 |
| 27 | 234881023 |
| 28 | 973078527 |
| 29 | 1006632959 |
| 30 | 2080374783 |
| 31 | 2147483647 |
| 32 | 70866960383 |
[1,5,7,39,47,111,127,1151,1279,2815,3071,13311, 14335,30719,32767,557055,589823,1245183,1310719, 5505023,5767167,12058623,12582911,104857599, 109051903,226492415,234881023,973078527, 1006632959,2080374783,2147483647,70866960383] |