The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 0 |
| 2 | 2 |
| 3 | 3 |
| 4 | 6 |
| 5 | 10 |
| 6 | 21 |
| 7 | 42 |
| 8 | 86 |
| 9 | 171 |
| 10 | 342 |
| 11 | 682 |
| 12 | 1365 |
| 13 | 2730 |
| 14 | 5462 |
| 15 | 10923 |
| 16 | 21846 |
| 17 | 43690 |
| 18 | 87381 |
| 19 | 174762 |
| 20 | 349526 |
| 21 | 699051 |
| 22 | 1398102 |
| 23 | 2796202 |
| 24 | 5592405 |
| 25 | 11184810 |
| 26 | 22369622 |
| 27 | 44739243 |
| 28 | 89478486 |
| 29 | 178956970 |
| 30 | 357913941 |
| 31 | 715827882 |
| 32 | 1431655766 |
| 33 | 2863311531 |
| 34 | 5726623062 |
| 35 | 11453246122 |
[0,0,2,3,6,10,21,42,86,171,342,682,1365,2730,5462, 10923,21846,43690,87381,174762,349526,699051, 1398102,2796202,5592405,11184810,22369622, 44739243,89478486,178956970,357913941,715827882, 1431655766,2863311531,5726623062,11453246122] |