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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.

A260942 Expansion of x * phi(-x) * psi(x^12) / chi(-x^3) in powers of x where phi(), psi(), chi() are Ramanujan theta functions.

Table of values

n a(n)
0 0
1 1
2 -2
3 0
4 1
5 0
6 0
7 1
8 0
9 0
10 0
11 -2
12 0
13 1
14 -2
15 0
16 2
17 0
18 0
19 1
20 0
21 0
22 1
23 -2
24 0
25 0
26 0
27 0
28 1
29 -2
30 0
31 0
32 0
33 0
34 1
35 0
36 0
37 2
38 -2
39 0
40 1
41 -2
42 0
43 1
44 0
45 0
46 1
47 -2
48 0
49 1
50 0
51 0
52 1
53 0
54 0
55 0
56 -2
57 0
58 2
59 0
60 0
61 0
62 0
63 0
64 0
65 -2
66 0
67 1
68 -2
69 0
70 0
71 0
72 0
73 2
74 -2
75 0
76 1
77 0
78 0
79 3
80 0
81 0
82 1

List of values

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

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