The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 4 |
| 4 | 7 |
| 5 | 11 |
| 6 | 16 |
| 7 | 22 |
| 8 | 30 |
| 9 | 46 |
| 10 | 92 |
| 11 | 232 |
| 12 | 628 |
| 13 | 1652 |
| 14 | 4096 |
| 15 | 9544 |
| 16 | 21000 |
| 17 | 43912 |
| 18 | 87824 |
| 19 | 169120 |
| 20 | 315952 |
| 21 | 578096 |
| 22 | 1048576 |
| 23 | 1913440 |
| 24 | 3567072 |
| 25 | 6874336 |
| 26 | 13748672 |
| 27 | 28384384 |
| 28 | 59797312 |
| 29 | 126906176 |
| 30 | 268435456 |
| 31 | 561834112 |
| 32 | 1158971520 |
| 33 | 2353246336 |
| 34 | 4706492672 |
| 35 | 9292452352 |
[1,2,4,7,11,16,22,30,46,92,232,628,1652,4096,9544, 21000,43912,87824,169120,315952,578096,1048576, 1913440,3567072,6874336,13748672,28384384, 59797312,126906176,268435456,561834112,1158971520, 2353246336,4706492672,9292452352] |