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A132003 Expansion of (phi(q^3) / phi(q)) * phi(-q^2) * phi(-q^6) in powers of q where phi() is a Ramanujan theta function.

Table of values

n a(n)
0 1
1 -2
2 2
3 -2
4 2
5 -4
6 2
7 0
8 2
9 -2
10 4
11 0
12 2
13 -4
14 0
15 -4
16 2
17 -4
18 2
19 0
20 4
21 0
22 0
23 0
24 2
25 -6
26 4
27 -2
28 0
29 -4
30 4
31 0
32 2
33 0
34 4
35 0
36 2
37 -4
38 0
39 -4
40 4
41 -4
42 0
43 0
44 0
45 -4
46 0
47 0
48 2
49 -2
50 6
51 -4
52 4
53 -4
54 2
55 0
56 0
57 0
58 4
59 0
60 4
61 -4
62 0
63 0
64 2
65 -8
66 0
67 0
68 4
69 0
70 0
71 0
72 2
73 -4
74 4
75 -6
76 0
77 0
78 4
79 0

List of values

[1, -2, 2, -2, 2, -4, 2, 0, 2, -2, 4, 0, 2, -4, 0, -4, 2, -4, 2, 0, 4, 0, 0, 0, 2, -6, 4, -2, 0, -4, 4, 0, 2, 0, 4, 0, 2, -4, 0, -4, 4, -4, 0, 0, 0, -4, 0, 0, 2, -2, 6, -4, 4, -4, 2, 0, 0, 0, 4, 0, 4, -4, 0, 0, 2, -8, 0, 0, 4, 0, 0, 0, 2, -4, 4, -6, 0, 0, 4, 0]

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