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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.

A253185 Expansion of (phi(-q) * phi(-q^23))^2 in powers of q where phi() is a Ramanujan theta function.

Table of values

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

List of values

[1, -4, 4, 0, 4, -8, 0, 0, 4, -4, 8, 0, 0, -8, 0, 0, 4, -8, 4, 0, 8, 0, 0, -4, 16, -28, 8, -16, 32, -8, 0, -16, 20, -32, 8, 0, 36, -8, 0, -16, 40, -24, 0, -32, 0, -8, 4, -16, 64, -36, 28, -32, 40, -8, 16, -32, 32, -32, 8, -48, 32, -8, 16, -64, 52, -16, 32, 0]

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