n | a(n) |
---|---|
3 | 0 |
4 | 0 |
5 | 4 |
6 | 4 |
7 | 8 |
8 | 30 |
9 | 52 |
10 | 103 |
11 | 289 |
12 | 707 |
13 | 1486 |
14 | 3513 |
15 | 9229 |
16 | 21679 |
17 | 51373 |
18 | 133607 |
19 | 336395 |
20 | 839750 |
21 | 2185547 |
22 | 5693422 |
23 | 14775023 |
24 | 38903387 |
25 | 102970446 |
26 | 272352898 |
27 | 723149230 |
28 | 1926009090 |
29 | 5131018080 |
30 | 13681082773 |
31 | 36530345424 |
[0,0,4,4,8,30,52,103,289,707,1486,3513,9229,21679, 51373,133607,336395,839750,2185547,5693422, 14775023,38903387,102970446,272352898,723149230, 1926009090,5131018080,13681082773,36530345424] |