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| n | a(n) |
|---|---|
| 2 | 3 |
| 3 | 7 |
| 4 | 23 |
| 5 | 31 |
| 6 | 103 |
| 7 | 127 |
| 8 | 431 |
| 9 | 911 |
| 10 | 1847 |
| 11 | 6719 |
| 12 | 10487 |
| 13 | 8191 |
| 14 | 56999 |
| 15 | 41399 |
| 16 | 135647 |
| 17 | 131071 |
| 18 | 560159 |
| 19 | 524287 |
| 20 | 1999871 |
| 21 | 3982271 |
| 22 | 5909759 |
| 23 | 17512991 |
| 24 | 46092239 |
| 25 | 46335599 |
| 26 | 164460119 |
| 27 | 186592247 |
| 28 | 736727807 |
| 29 | 3926707199 |
| 30 | 4146049487 |
| 31 | 2147483647 |
| 32 | 8994904463 |
| 33 | 11132323439 |
[3,7,23,31,103,127,431,911,1847,6719,10487,8191, 56999,41399,135647,131071,560159,524287,1999871, 3982271,5909759,17512991,46092239,46335599, 164460119,186592247,736727807,3926707199, 4146049487,2147483647,8994904463,11132323439] |