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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.

A257536 Expansion of phi(-x^4)^2 * f(-x^1, -x^5) in powers of x where phi(), f() are Ramanujan theta functions.

Table of values

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

List of values

[1, -1, 0, 0, -4, 3, 0, 0, 5, 0, 0, 0, -4, -4, 0, 0, 9, -4, 0, 0, -12, 3, 0, 0, 8, 12, 0, 0, -8, -4, 0, 0, 8, -5, 0, 0, -12, 0, 0, 0, 13, 0, 0, 0, -8, -8, 0, 0, 16, -4, 0, 0, -12, 12, 0, 0, 13, 12, 0, 0, -20, -8, 0, 0, 8, -9, 0, 0, -16, 12, 0, 0, 16, 0, 0, 0]

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