n | a(n) |
---|---|
0 | 1 |
1 | -2 |
2 | 0 |
3 | 0 |
4 | 4 |
5 | -4 |
6 | 0 |
7 | 0 |
8 | 9 |
9 | -12 |
10 | 0 |
11 | 0 |
12 | 20 |
13 | -24 |
14 | 0 |
15 | 0 |
16 | 42 |
17 | -50 |
18 | 0 |
19 | 0 |
20 | 80 |
21 | -92 |
22 | 0 |
23 | 0 |
24 | 147 |
25 | -172 |
26 | 0 |
27 | 0 |
28 | 260 |
29 | -296 |
30 | 0 |
31 | 0 |
32 | 445 |
33 | -510 |
34 | 0 |
35 | 0 |
36 | 744 |
37 | -840 |
38 | 0 |
39 | 0 |
40 | 1215 |
41 | -1372 |
42 | 0 |
43 | 0 |
44 | 1944 |
45 | -2176 |
46 | 0 |
47 | 0 |
48 | 3059 |
49 | -3424 |
50 | 0 |
51 | 0 |
52 | 4740 |
53 | -5268 |
54 | 0 |
55 | 0 |
56 | 7239 |
57 | -8040 |
58 | 0 |
59 | 0 |
60 | 10920 |
[1,-2,0,0,4,-4,0,0,9,-12,0,0,20,-24,0,0,42,-50,0, 0,80,-92,0,0,147,-172,0,0,260,-296,0,0,445,-510,0, 0,744,-840,0,0,1215,-1372,0,0,1944,-2176,0,0,3059, -3424,0,0,4740,-5268,0,0,7239,-8040,0,0,10920] |