n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 1 |
4 | 2 |
5 | 4 |
6 | 8 |
7 | 17 |
8 | 38 |
9 | 88 |
10 | 212 |
11 | 530 |
12 | 1376 |
13 | 3693 |
14 | 10232 |
15 | 29231 |
16 | 85906 |
17 | 259291 |
18 | 802308 |
19 | 2540635 |
20 | 8220218 |
21 | 27134483 |
22 | 91258141 |
23 | 312324027 |
24 | 1086545705 |
25 | 3838581926 |
[1,1,1,1,2,4,8,17,38,88,212,530,1376,3693,10232, 29231,85906,259291,802308,2540635,8220218, 27134483,91258141,312324027,1086545705,3838581926] |