n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 1 |
3 | 4 |
4 | 7 |
5 | 18 |
6 | 37 |
7 | 85 |
8 | 183 |
9 | 407 |
10 | 888 |
11 | 1956 |
12 | 4284 |
13 | 9409 |
14 | 20630 |
15 | 45270 |
16 | 99289 |
17 | 217819 |
18 | 477776 |
19 | 1048053 |
20 | 2298912 |
21 | 5042783 |
22 | 11061455 |
23 | 24263687 |
24 | 53223023 |
25 | 116746272 |
26 | 256086074 |
27 | 561731936 |
28 | 1232174181 |
29 | 2702807740 |
30 | 5928681960 |
31 | 13004724921 |
32 | 28526216361 |
[0,1,1,4,7,18,37,85,183,407,888,1956,4284,9409, 20630,45270,99289,217819,477776,1048053,2298912, 5042783,11061455,24263687,53223023,116746272, 256086074,561731936,1232174181,2702807740, 5928681960,13004724921,28526216361] |