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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.

A063730 Number of solutions to w^2 + x^2 + y^2 + z^2 = n in positive integers.

Table of values

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

List of values

[0, 0, 0, 0, 1, 0, 0, 4, 0, 0, 6, 0, 4, 4, 0, 12, 1, 0, 12, 4, 6, 4, 12, 12, 0, 12, 6, 12, 12, 0, 24, 16, 0, 12, 18, 12, 13, 16, 12, 28, 6, 0, 36, 16, 12, 24, 24, 24, 4, 16, 30, 24, 18, 12, 36, 36, 0, 28, 42, 12, 36, 16, 24, 52, 1, 24, 48, 28, 18, 24, 60, 36, 12]

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