The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 4 |
| 4 | 8 |
| 5 | 16 |
| 6 | 32 |
| 7 | 64 |
| 8 | 128 |
| 9 | 256 |
| 10 | 1 |
| 11 | 5 |
| 12 | 22 |
| 13 | 92 |
| 14 | 376 |
| 15 | 1520 |
| 16 | 6112 |
| 17 | 24512 |
| 18 | 98176 |
| 19 | 392960 |
| 20 | 2 |
| 21 | 22 |
| 22 | 200 |
| 23 | 1696 |
| 24 | 13952 |
| 25 | 113152 |
| 26 | 911360 |
| 27 | 7315456 |
| 28 | 58621952 |
| 29 | 469368832 |
| 30 | 4 |
| 31 | 92 |
| 32 | 1696 |
| 33 | 28928 |
| 34 | 477184 |
| 35 | 7749632 |
| 36 | 124911616 |
| 37 | 2005925888 |
| 38 | 32153534464 |
| 39 | 514926313472 |
| 40 | 8 |
[1,1,2,4,8,16,32,64,128,256,1,5,22,92,376,1520, 6112,24512,98176,392960,2,22,200,1696,13952, 113152,911360,7315456,58621952,469368832,4,92, 1696,28928,477184,7749632,124911616,2005925888, 32153534464,514926313472,8] |