n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 1 |
4 | 0 |
5 | 1 |
6 | 0 |
7 | 3 |
8 | 0 |
9 | 5 |
10 | 0 |
11 | 12 |
12 | 0 |
13 | 23 |
14 | 0 |
15 | 55 |
16 | 0 |
17 | 114 |
18 | 0 |
19 | 273 |
20 | 0 |
21 | 588 |
22 | 0 |
23 | 1428 |
24 | 0 |
25 | 3156 |
26 | 0 |
27 | 7752 |
28 | 0 |
29 | 17427 |
30 | 0 |
31 | 43263 |
32 | 0 |
33 | 98516 |
34 | 0 |
35 | 246675 |
36 | 0 |
37 | 567281 |
38 | 0 |
39 | 1430715 |
40 | 0 |
41 | 3316521 |
42 | 0 |
43 | 8414640 |
44 | 0 |
45 | 19633796 |
46 | 0 |
47 | 50067108 |
48 | 0 |
49 | 117464424 |
50 | 0 |
51 | 300830572 |
52 | 0 |
53 | 709098696 |
[0,0,1,0,1,0,3,0,5,0,12,0,23,0,55,0,114,0,273,0, 588,0,1428,0,3156,0,7752,0,17427,0,43263,0,98516, 0,246675,0,567281,0,1430715,0,3316521,0,8414640,0, 19633796,0,50067108,0,117464424,0,300830572,0, 709098696] |