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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.

A230204 Expansion of phi(-x) * f(x^3, x^5) in powers of x where phi(), f() are Ramanujan theta functions.

Table of values

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

List of values

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

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