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A256269 Expansion of psi(-q) * chi(q^3) * phi(q^9) in powers of q where phi(), psi(), chi() are Ramanujan theta functions.

Table of values

n a(n)
0 1
1 -1
2 0
3 0
4 -1
5 0
6 0
7 0
8 0
9 4
10 -2
11 0
12 0
13 -2
14 0
15 0
16 -1
17 0
18 4
19 0
20 0
21 0
22 0
23 0
24 0
25 -3
26 0
27 0
28 0
29 0
30 0
31 0
32 0
33 0
34 -2
35 0
36 4
37 -2
38 0
39 0
40 -2
41 0
42 0
43 0
44 0
45 8
46 0
47 0
48 0
49 -1
50 0
51 0
52 -2
53 0
54 0
55 0
56 0
57 0
58 -2
59 0
60 0
61 -2
62 0
63 0
64 -1
65 0
66 0
67 0
68 0
69 0
70 0
71 0
72 4
73 -2
74 0
75 0
76 0
77 0
78 0
79 0
80 0
81 4

List of values

[1, -1, 0, 0, -1, 0, 0, 0, 0, 4, -2, 0, 0, -2, 0, 0, -1, 0, 4, 0, 0, 0, 0, 0, 0, -3, 0, 0, 0, 0, 0, 0, 0, 0, -2, 0, 4, -2, 0, 0, -2, 0, 0, 0, 0, 8, 0, 0, 0, -1, 0, 0, -2, 0, 0, 0, 0, 0, -2, 0, 0, -2, 0, 0, -1, 0, 0, 0, 0, 0, 0, 0, 4, -2, 0, 0, 0, 0, 0, 0, 0, 4]

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