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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.

A260162 Expansion of phi(-x) / psi(-x^3) in powers of x where psi(), phi() are Ramanujan theta functions.

Table of values

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

List of values

[1, -2, 0, 1, 0, 0, 1, 0, 0, 0, -2, 0, 1, -2, 0, 2, 0, 0, 1, 0, 0, 1, -2, 0, 2, -4, 0, 3, -2, 0, 2, 0, 0, 1, -4, 0, 4, -6, 0, 5, -2, 0, 3, 0, 0, 3, -6, 0, 6, -10, 0, 8, -4, 0, 5, -2, 0, 4, -10, 0, 9, -14, 0, 12, -6, 0, 8, -2, 0, 7, -14, 0, 14, -22, 0, 18, -10]

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