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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.

A246815 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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