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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.

A321430 Expansion of Product_{i>0, j>0} (1 - x^(i^2 + j^2)).

Table of values

n a(n)
0 1
1 0
2 -1
3 0
4 0
5 -2
6 0
7 2
8 -1
9 0
10 0
11 0
12 1
13 0
14 0
15 4
16 0
17 -6
18 4
19 2
20 -7
21 2
22 7
23 -2
24 -4
25 2
26 -4
27 0
28 0
29 -4
30 11
31 2
32 -16
33 2
34 13
35 -16
36 0
37 22
38 -12
39 -4
40 2
41 -14
42 12
43 10
44 -17
45 20
46 27
47 -48
48 -4
49 34
50 -27
51 -2
52 22
53 -6
54 -4
55 4
56 -35
57 32
58 45
59 -72
60 29
61 66
62 -81
63 -40
64 76
65 -28
66 -24
67 68
68 -56
69 28

List of values

[1, 0, -1, 0, 0, -2, 0, 2, -1, 0, 0, 0, 1, 0, 0, 4, 0, -6, 4, 2, -7, 2, 7, -2, -4, 2, -4, 0, 0, -4, 11, 2, -16, 2, 13, -16, 0, 22, -12, -4, 2, -14, 12, 10, -17, 20, 27, -48, -4, 34, -27, -2, 22, -6, -4, 4, -35, 32, 45, -72, 29, 66, -81, -40, 76, -28, -24, 68, -56, 28]

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