n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 1 |
3 | 1 |
4 | 1 |
5 | 0 |
6 | 0 |
7 | 2 |
8 | 6 |
9 | 14 |
10 | 20 |
11 | 20 |
12 | 0 |
13 | 0 |
14 | 0 |
15 | 6 |
16 | 36 |
17 | 150 |
18 | 450 |
19 | 1050 |
20 | 1680 |
21 | 1680 |
22 | 0 |
23 | 0 |
24 | 0 |
25 | 0 |
26 | 24 |
27 | 240 |
28 | 1560 |
29 | 7560 |
30 | 29400 |
31 | 90720 |
32 | 218400 |
33 | 369600 |
34 | 369600 |
35 | 0 |
36 | 0 |
37 | 0 |
38 | 0 |
39 | 0 |
40 | 120 |
41 | 1800 |
42 | 16800 |
43 | 117600 |
44 | 667800 |
45 | 3137400 |
46 | 12243000 |
47 | 38808000 |
48 | 96096000 |
49 | 168168000 |
50 | 168168000 |
[1,0,1,1,1,0,0,2,6,14,20,20,0,0,0,6,36,150,450, 1050,1680,1680,0,0,0,0,24,240,1560,7560,29400, 90720,218400,369600,369600,0,0,0,0,0,120,1800, 16800,117600,667800,3137400,12243000,38808000, 96096000,168168000,168168000] |