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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.

A262780 Expansion of phi(-x^6) * psi(x^4) + x * phi(-x^2) * psi(x^12) in powers of x where phi(), psi() are Ramanujan theta functions.

Table of values

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

List of values

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

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