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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.

A246836 Expansion of phi(x) * psi(-x^2)^2 in powers of x where phi(), psi() are Ramanujan theta functions.

Table of values

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

List of values

[1, 2, -2, -4, 3, 2, -6, -4, 4, 6, -4, -4, 7, 8, -2, -8, 8, 4, -10, -4, 4, 10, -10, -8, 9, 4, -6, -12, 8, 6, -10, -12, 4, 14, -8, -4, 16, 10, -8, -8, 9, 10, -12, -12, 8, 12, -12, -4, 20, 10, -6, -20, 8, 6, -10, -12, 8, 20, -18, -8, 11, 12, -12, -16, 8, 6, -20]

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