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This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A133574 Expansion of (5 * phi(q^5)^2 - phi(q)^2) / 4 in powers of q where phi() is a Ramanujan theta function.

Table of values

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

List of values

[1, -1, -1, 0, -1, 3, 0, 0, -1, -1, 3, 0, 0, -2, 0, 0, -1, -2, -1, 0, 3, 0, 0, 0, 0, 7, -2, 0, 0, -2, 0, 0, -1, 0, -2, 0, -1, -2, 0, 0, 3, -2, 0, 0, 0, 3, 0, 0, 0, -1, 7, 0, -2, -2, 0, 0, 0, 0, -2, 0, 0, -2, 0, 0, -1, 6, 0, 0, -2, 0, 0, 0, -1, -2, -2, 0, 0, 0]

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