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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.

A260941 Expansion of phi(-x) * phi(x^6) / chi(-x^3) in powers of x where phi(), chi() are Ramanujan theta functions.

Table of values

n a(n)
0 1
1 -2
2 0
3 1
4 0
5 0
6 3
7 -4
8 0
9 2
10 -2
11 0
12 2
13 0
14 0
15 1
16 -4
17 0
18 0
19 0
20 0
21 3
22 0
23 0
24 2
25 -4
26 0
27 4
28 -2
29 0
30 2
31 0
32 0
33 0
34 -8
35 0
36 1
37 0
38 0
39 2
40 0
41 0
42 2
43 0
44 0
45 3
46 0
47 0
48 0
49 0
50 0
51 2
52 -4
53 0
54 2
55 -6
56 0
57 2
58 0
59 0
60 4
61 -4
62 0
63 0
64 -4
65 0
66 1
67 0
68 0
69 4
70 0
71 0
72 2
73 0
74 0
75 2
76 0
77 0
78 1
79 -4
80 0
81 0
82 -4

List of values

[1, -2, 0, 1, 0, 0, 3, -4, 0, 2, -2, 0, 2, 0, 0, 1, -4, 0, 0, 0, 0, 3, 0, 0, 2, -4, 0, 4, -2, 0, 2, 0, 0, 0, -8, 0, 1, 0, 0, 2, 0, 0, 2, 0, 0, 3, 0, 0, 0, 0, 0, 2, -4, 0, 2, -6, 0, 2, 0, 0, 4, -4, 0, 0, -4, 0, 1, 0, 0, 4, 0, 0, 2, 0, 0, 2, 0, 0, 1, -4, 0, 0, -4]

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