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A132004 Expansion of (1 - phi(q^3) / phi(q) * phi(-q^2) * phi(-q^6)) / 2 in powers of q where phi() is a Ramanujan theta function.

Table of values

n a(n)
1 1
2 -1
3 1
4 -1
5 2
6 -1
7 0
8 -1
9 1
10 -2
11 0
12 -1
13 2
14 0
15 2
16 -1
17 2
18 -1
19 0
20 -2
21 0
22 0
23 0
24 -1
25 3
26 -2
27 1
28 0
29 2
30 -2
31 0
32 -1
33 0
34 -2
35 0
36 -1
37 2
38 0
39 2
40 -2
41 2
42 0
43 0
44 0
45 2
46 0
47 0
48 -1
49 1
50 -3
51 2
52 -2
53 2
54 -1
55 0
56 0
57 0
58 -2
59 0
60 -2
61 2
62 0
63 0
64 -1
65 4
66 0
67 0
68 -2
69 0
70 0
71 0
72 -1
73 2
74 -2
75 3
76 0
77 0
78 -2

List of values

[1, -1, 1, -1, 2, -1, 0, -1, 1, -2, 0, -1, 2, 0, 2, -1, 2, -1, 0, -2, 0, 0, 0, -1, 3, -2, 1, 0, 2, -2, 0, -1, 0, -2, 0, -1, 2, 0, 2, -2, 2, 0, 0, 0, 2, 0, 0, -1, 1, -3, 2, -2, 2, -1, 0, 0, 0, -2, 0, -2, 2, 0, 0, -1, 4, 0, 0, -2, 0, 0, 0, -1, 2, -2, 3, 0, 0, -2]

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