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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | 6 |
| 3 | 7 |
| 4 | 28 |
| 5 | 63 |
| 6 | 120 |
| 7 | 31 |
| 8 | 496 |
| 9 | 511 |
| 10 | 2016 |
| 11 | 3711 |
| 12 | 7616 |
| 13 | 8191 |
| 14 | 32640 |
| 15 | 63999 |
| 16 | 7936 |
| 17 | 262143 |
| 18 | 56832 |
| 19 | 1042431 |
| 20 | 515072 |
| 21 | 4194303 |
| 22 | 4192256 |
| 23 | 16752639 |
| 24 | 33550336 |
| 25 | 67108863 |
| 26 | 31580160 |
| 27 | 268337151 |
| 28 | 265142272 |
| 29 | 1073741823 |
| 30 | 2147450880 |
| 31 | 4294574079 |
| 32 | 2145320960 |
| 33 | 17179869183 |
[1,3,6,7,28,63,120,31,496,511,2016,3711,7616,8191, 32640,63999,7936,262143,56832,1042431,515072, 4194303,4192256,16752639,33550336,67108863, 31580160,268337151,265142272,1073741823, 2147450880,4294574079,2145320960,17179869183] |