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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 3 |
| 3 | 5 |
| 4 | 15 |
| 5 | 31 |
| 6 | 45 |
| 7 | 119 |
| 8 | 231 |
| 9 | 325 |
| 10 | 975 |
| 11 | 2015 |
| 12 | 2925 |
| 13 | 8191 |
| 14 | 16383 |
| 15 | 23405 |
| 16 | 61431 |
| 17 | 118759 |
| 18 | 166725 |
| 19 | 499151 |
| 20 | 1030623 |
| 21 | 1495405 |
| 22 | 4186623 |
| 23 | 8372735 |
| 24 | 11960685 |
| 25 | 31392247 |
| 26 | 60686823 |
| 27 | 85197125 |
| 28 | 255591375 |
| 29 | 528222175 |
| 30 | 766774125 |
| 31 | 2147229695 |
| 32 | 4294721535 |
| 33 | 6135503725 |
| 34 | 16103829495 |
| 35 | 31132078055 |
[1,3,5,15,31,45,119,231,325,975,2015,2925,8191, 16383,23405,61431,118759,166725,499151,1030623, 1495405,4186623,8372735,11960685,31392247, 60686823,85197125,255591375,528222175,766774125, 2147229695,4294721535,6135503725,16103829495, 31132078055] |