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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.

A226192 Expansion of phi(x^2) * psi(-x) in powers of x where phi(), psi() are Ramanujan theta functions.

Table of values

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

List of values

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

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