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A319244 Expansion of Product_{k>0} (1 - x^(k^3))/(1 + x^(k^3)).

Table of values

n a(n)
0 1
1 -2
2 2
3 -2
4 2
5 -2
6 2
7 -2
8 0
9 2
10 -2
11 2
12 -2
13 2
14 -2
15 2
16 0
17 -2
18 2
19 -2
20 2
21 -2
22 2
23 -2
24 0
25 2
26 -2
27 0
28 2
29 -2
30 2
31 -2
32 4
33 -6
34 6
35 -2
36 -2
37 2
38 -2
39 2
40 -4
41 6
42 -6
43 2
44 2
45 -2
46 2
47 -2
48 4
49 -6
50 6
51 -2
52 -2
53 2
54 0
55 -2
56 0
57 2
58 -2
59 -2
60 6
61 -6
62 2
63 2
64 -2
65 2
66 -2
67 6
68 -10
69 10
70 -6
71 2
72 0
73 -2
74 2
75 -6
76 10

List of values

[1, -2, 2, -2, 2, -2, 2, -2, 0, 2, -2, 2, -2, 2, -2, 2, 0, -2, 2, -2, 2, -2, 2, -2, 0, 2, -2, 0, 2, -2, 2, -2, 4, -6, 6, -2, -2, 2, -2, 2, -4, 6, -6, 2, 2, -2, 2, -2, 4, -6, 6, -2, -2, 2, 0, -2, 0, 2, -2, -2, 6, -6, 2, 2, -2, 2, -2, 6, -10, 10, -6, 2, 0, -2, 2, -6, 10]

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