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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.

A253243 Expansion of phi(-x^2) * psi(x^3) * chi(x^3) in powers of x where phi(), psi(), chi() are Ramanujan theta functions.

Table of values

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

List of values

[1, 0, -2, 2, 0, -4, 1, 0, 0, 2, 0, 0, 3, 0, -4, 2, 0, 0, 2, 0, -2, 0, 0, -4, 2, 0, 0, 2, 0, -4, 1, 0, -4, 4, 0, 0, 0, 0, 0, 2, 0, 0, 3, 0, 0, 2, 0, -4, 2, 0, -4, 0, 0, 0, 4, 0, -2, 2, 0, -4, 2, 0, 0, 0, 0, 0, 0, 0, -8, 2, 0, 0, 1, 0, 0, 4, 0, -4, 2, 0, 0, 2]

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