n | a(n) |
---|---|
0 | 0 |
1 | 2 |
2 | 0 |
3 | 4 |
4 | 4 |
5 | 0 |
6 | 6 |
7 | 20 |
8 | 6 |
9 | 0 |
10 | 8 |
11 | 56 |
12 | 56 |
13 | 8 |
14 | 0 |
15 | 10 |
16 | 120 |
17 | 252 |
18 | 120 |
19 | 10 |
20 | 0 |
21 | 12 |
22 | 220 |
23 | 792 |
24 | 792 |
25 | 220 |
26 | 12 |
27 | 0 |
28 | 14 |
29 | 364 |
30 | 2002 |
31 | 3432 |
32 | 2002 |
33 | 364 |
34 | 14 |
35 | 0 |
36 | 16 |
37 | 560 |
38 | 4368 |
39 | 11440 |
40 | 11440 |
41 | 4368 |
42 | 560 |
43 | 16 |
44 | 0 |
45 | 18 |
46 | 816 |
47 | 8568 |
48 | 31824 |
49 | 48620 |
50 | 31824 |
51 | 8568 |
52 | 816 |
53 | 18 |
54 | 0 |
55 | 20 |
56 | 1140 |
57 | 15504 |
[0,2,0,4,4,0,6,20,6,0,8,56,56,8,0,10,120,252,120, 10,0,12,220,792,792,220,12,0,14,364,2002,3432, 2002,364,14,0,16,560,4368,11440,11440,4368,560,16, 0,18,816,8568,31824,48620,31824,8568,816,18,0,20, 1140,15504] |