The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 1 |
| 6 | 5 |
| 7 | 14 |
| 8 | 35 |
| 9 | 83 |
| 10 | 193 |
| 11 | 417 |
| 12 | 890 |
| 13 | 1847 |
| 14 | 3809 |
| 15 | 7805 |
| 16 | 15833 |
| 17 | 32028 |
| 18 | 64513 |
| 19 | 129671 |
| 20 | 260155 |
| 21 | 521775 |
| 22 | 1044982 |
| 23 | 2092692 |
| 24 | 4188168 |
| 25 | 8381434 |
| 26 | 16767650 |
| 27 | 33544423 |
| 28 | 67098683 |
| 29 | 134213022 |
| 30 | 268443023 |
| 31 | 536912014 |
| 32 | 1073846768 |
| 33 | 2147720476 |
| 34 | 4295440133 |
| 35 | 8590833907 |
[0,0,0,0,0,1,5,14,35,83,193,417,890,1847,3809, 7805,15833,32028,64513,129671,260155,521775, 1044982,2092692,4188168,8381434,16767650,33544423, 67098683,134213022,268443023,536912014,1073846768, 2147720476,4295440133,8590833907] |