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Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 4 |
| 3 | 10 |
| 4 | 20 |
| 5 | 42 |
| 6 | 90 |
| 7 | 182 |
| 8 | 370 |
| 9 | 748 |
| 10 | 1526 |
| 11 | 3060 |
| 12 | 6156 |
| 13 | 12344 |
| 14 | 24748 |
| 15 | 49654 |
| 16 | 99392 |
| 17 | 198966 |
| 18 | 398166 |
| 19 | 796658 |
| 20 | 1593694 |
| 21 | 3188584 |
| 22 | 6377714 |
| 23 | 12756888 |
| 24 | 25515312 |
| 25 | 51033092 |
| 26 | 102068728 |
| 27 | 204141754 |
| 28 | 408292220 |
| 29 | 816590586 |
| 30 | 1633192578 |
| 31 | 3266399030 |
| 32 | 6532817194 |
| 33 | 13065657556 |
[1,2,4,10,20,42,90,182,370,748,1526,3060,6156, 12344,24748,49654,99392,198966,398166,796658, 1593694,3188584,6377714,12756888,25515312, 51033092,102068728,204141754,408292220,816590586, 1633192578,3266399030,6532817194,13065657556] |