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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.

A259668 Expansion of psi(-x)^2 * psi(x^3)^2 / (phi(-x^4) * psi(-x^6)) in power of x where phi(), psi() are Ramanujan theta functions.

Table of values

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

List of values

[1, -2, 1, 0, 0, -2, 3, -2, 2, 0, 0, -2, 3, -2, 0, 0, 0, 0, 2, -4, 1, 0, 0, -2, 2, -2, 4, 0, 0, 0, 3, -4, 0, 0, 0, 0, 4, -2, 0, 0, 0, -4, 1, -2, 2, 0, 0, -2, 2, -2, 0, 0, 0, 0, 4, 0, 3, 0, 0, -2, 2, -6, 2, 0, 0, -2, 4, -2, 0, 0, 0, 0, 1, -2, 2, 0, 0, -2, 2, -2]

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