n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 0 |
4 | 1 |
5 | 0 |
6 | 2 |
7 | 0 |
8 | 2 |
9 | 0 |
10 | 7 |
11 | 0 |
12 | 12 |
13 | 0 |
14 | 29 |
15 | 0 |
16 | 55 |
17 | 0 |
18 | 143 |
19 | 0 |
20 | 271 |
21 | 0 |
22 | 728 |
23 | 0 |
24 | 1428 |
25 | 0 |
26 | 3873 |
27 | 0 |
28 | 7752 |
29 | 0 |
30 | 21318 |
31 | 0 |
32 | 43256 |
33 | 0 |
34 | 120175 |
35 | 0 |
36 | 246675 |
37 | 0 |
38 | 690678 |
39 | 0 |
40 | 1430715 |
41 | 0 |
42 | 4032015 |
43 | 0 |
44 | 8414610 |
45 | 0 |
46 | 23841480 |
47 | 0 |
48 | 50067108 |
49 | 0 |
50 | 142498637 |
51 | 0 |
52 | 300830572 |
[0,0,0,1,0,2,0,2,0,7,0,12,0,29,0,55,0,143,0,271,0, 728,0,1428,0,3873,0,7752,0,21318,0,43256,0,120175, 0,246675,0,690678,0,1430715,0,4032015,0,8414610,0, 23841480,0,50067108,0,142498637,0,300830572] |