n | a(n) |
---|---|
-1 | 1 |
0 | 1 |
1 | 0 |
2 | -2 |
3 | -3 |
4 | 0 |
5 | 4 |
6 | 6 |
7 | 0 |
8 | -10 |
9 | -12 |
10 | 0 |
11 | 20 |
12 | 24 |
13 | 0 |
14 | -36 |
15 | -45 |
16 | 0 |
17 | 64 |
18 | 78 |
19 | 0 |
20 | -112 |
21 | -132 |
22 | 0 |
23 | 189 |
24 | 222 |
25 | 0 |
26 | -308 |
27 | -363 |
28 | 0 |
29 | 492 |
30 | 576 |
31 | 0 |
32 | -778 |
33 | -900 |
34 | 0 |
35 | 1210 |
36 | 1392 |
37 | 0 |
38 | -1844 |
39 | -2121 |
40 | 0 |
41 | 2776 |
42 | 3180 |
43 | 0 |
44 | -4144 |
45 | -4716 |
46 | 0 |
47 | 6114 |
48 | 6936 |
49 | 0 |
50 | -8914 |
51 | -10098 |
52 | 0 |
53 | 12884 |
54 | 14550 |
[1,1,0,-2,-3,0,4,6,0,-10,-12,0,20,24,0,-36,-45,0, 64,78,0,-112,-132,0,189,222,0,-308,-363,0,492,576, 0,-778,-900,0,1210,1392,0,-1844,-2121,0,2776,3180, 0,-4144,-4716,0,6114,6936,0,-8914,-10098,0,12884, 14550] |