n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 1 |
3 | -1 |
4 | -2 |
5 | 1 |
6 | -2 |
7 | 0 |
8 | -6 |
9 | 1 |
10 | -3 |
11 | 0 |
12 | 18 |
13 | -12 |
14 | 1 |
15 | -4 |
16 | 0 |
17 | -40 |
18 | 80 |
19 | -20 |
20 | 1 |
21 | -5 |
22 | 0 |
23 | 75 |
24 | -400 |
25 | 225 |
26 | -30 |
27 | 1 |
28 | -6 |
29 | 0 |
30 | -126 |
31 | 1680 |
32 | -1890 |
33 | 504 |
34 | -42 |
35 | 1 |
36 | -7 |
37 | 0 |
38 | 196 |
39 | -6272 |
40 | 13230 |
41 | -6272 |
42 | 980 |
43 | -56 |
44 | 1 |
45 | -8 |
46 | 0 |
47 | -288 |
48 | 21504 |
49 | -81648 |
50 | 64512 |
51 | -16800 |
52 | 1728 |
53 | -72 |
54 | 1 |
55 | -9 |
56 | 0 |
57 | 405 |
[1,0,1,-1,-2,1,-2,0,-6,1,-3,0,18,-12,1,-4,0,-40, 80,-20,1,-5,0,75,-400,225,-30,1,-6,0,-126,1680, -1890,504,-42,1,-7,0,196,-6272,13230,-6272,980, -56,1,-8,0,-288,21504,-81648,64512,-16800,1728, -72,1,-9,0,405] |