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| n | a(n) |
|---|---|
| 2 | 9 |
| 3 | 49 |
| 4 | 15 |
| 5 | 961 |
| 6 | 21 |
| 7 | 16129 |
| 8 | 51 |
| 9 | 511 |
| 10 | 93 |
| 11 | 2047 |
| 12 | 39 |
| 13 | 67092481 |
| 14 | 381 |
| 15 | 1057 |
| 16 | 771 |
| 17 | 17179607041 |
| 18 | 219 |
| 19 | 274876858369 |
| 20 | 123 |
| 21 | 2359 |
| 22 | 2049 |
| 23 | 8388607 |
| 24 | 723 |
| 25 | 55831 |
| 26 | 24573 |
| 27 | 1838599 |
| 28 | 381 |
| 29 | 486737 |
| 30 | 993 |
| 31 | 4611686014132420609 |
| 32 | 196611 |
| 33 | 4196353 |
| 34 | 393213 |
| 35 | 3810551 |
| 36 | 327 |
| 37 | 137438953471 |
| 38 | 1572861 |
| 39 | 849583 |
| 40 | 185043 |
[9,49,15,961,21,16129,51,511,93,2047,39,67092481, 381,1057,771,17179607041,219,274876858369,123, 2359,2049,8388607,723,55831,24573,1838599,381, 486737,993,4611686014132420609,196611,4196353, 393213,3810551,327,137438953471,1572861,849583, 185043] |