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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.

A259538 Expansion of psi(-x)^2 / psi(-x^3) in powers of x where psi() is a Ramanujan theta function.

Table of values

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

List of values

[1, -2, 1, -1, 0, 1, 2, -2, 1, 1, -2, 0, 1, -4, 1, 1, -2, 2, 3, -2, 2, 1, -4, 2, 2, -6, 3, 2, -4, 3, 2, -6, 3, 4, -8, 3, 5, -10, 5, 3, -10, 6, 7, -10, 5, 8, -12, 6, 7, -16, 8, 7, -16, 9, 9, -18, 10, 10, -22, 10, 11, -26, 13, 12, -26, 15, 14, -28, 15, 17, -34]

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