The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 2 |
| 3 | 5 |
| 4 | 8 |
| 5 | 15 |
| 6 | 28 |
| 7 | 52 |
| 8 | 96 |
| 9 | 181 |
| 10 | 341 |
| 11 | 645 |
| 12 | 1224 |
| 13 | 2332 |
| 14 | 4456 |
| 15 | 8535 |
| 16 | 16384 |
| 17 | 31515 |
| 18 | 60729 |
| 19 | 117218 |
| 20 | 226594 |
| 21 | 438637 |
| 22 | 850192 |
| 23 | 1649843 |
| 24 | 3205122 |
| 25 | 6232879 |
| 26 | 12132353 |
| 27 | 23636674 |
| 28 | 46088019 |
| 29 | 89934783 |
| 30 | 175624456 |
| 31 | 343195341 |
| 32 | 671088640 |
| 33 | 1313061078 |
| 34 | 2570645474 |
| 35 | 5035452071 |
[0,2,5,8,15,28,52,96,181,341,645,1224,2332,4456, 8535,16384,31515,60729,117218,226594,438637, 850192,1649843,3205122,6232879,12132353,23636674, 46088019,89934783,175624456,343195341,671088640, 1313061078,2570645474,5035452071] |