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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.

A244560 Expansion of f(-x^1, -x^7)^2 in powers of x where f() is Ramanujan's two-variable theta function.

Table of values

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

List of values

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

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