n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 1 |
4 | 2 |
5 | 4 |
6 | 9 |
7 | 20 |
8 | 48 |
9 | 117 |
10 | 290 |
11 | 734 |
12 | 1880 |
13 | 4868 |
14 | 12730 |
15 | 33556 |
16 | 89072 |
17 | 237904 |
18 | 638873 |
19 | 1723930 |
20 | 4672008 |
21 | 12710904 |
22 | 34703894 |
23 | 95054188 |
24 | 261116816 |
25 | 719223064 |
26 | 1985934212 |
27 | 5496123033 |
28 | 15242821108 |
29 | 42357113994 |
30 | 117918233704 |
31 | 328833828334 |
32 | 918470764376 |
33 | 2569238134248 |
34 | 7197046596440 |
[1,1,1,2,4,9,20,48,117,290,734,1880,4868,12730, 33556,89072,237904,638873,1723930,4672008, 12710904,34703894,95054188,261116816,719223064, 1985934212,5496123033,15242821108,42357113994, 117918233704,328833828334,918470764376, 2569238134248,7197046596440] |