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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.

A262774 Expansion of psi(x^2) * phi(-x^3) in powers of x where phi(), psi() are Ramanujan theta functions.

Table of values

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

List of values

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

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