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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.

A262726 Expansion of phi(-x) * psi(x^6) in powers of x where phi(), psi() are Ramanujan theta functions.

Table of values

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

List of values

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

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