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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.

A055672 Number of right-inequivalent prime Hurwitz quaternions of norm n.

Table of values

n a(n)
0 0
1 0
2 1
3 4
4 0
5 6
6 0
7 8
8 0
9 0
10 0
11 12
12 0
13 14
14 0
15 0
16 0
17 18
18 0
19 20
20 0
21 0
22 0
23 24
24 0
25 0
26 0
27 0
28 0
29 30
30 0
31 32
32 0
33 0
34 0
35 0
36 0
37 38
38 0
39 0
40 0
41 42
42 0
43 44
44 0
45 0
46 0
47 48
48 0
49 0
50 0
51 0
52 0
53 54
54 0
55 0
56 0
57 0
58 0
59 60
60 0
61 62
62 0
63 0
64 0
65 0
66 0
67 68
68 0
69 0
70 0
71 72
72 0
73 74
74 0
75 0
76 0
77 0
78 0
79 80
80 0
81 0
82 0
83 84
84 0
85 0
86 0
87 0
88 0
89 90

List of values

[0, 0, 1, 4, 0, 6, 0, 8, 0, 0, 0, 12, 0, 14, 0, 0, 0, 18, 0, 20, 0, 0, 0, 24, 0, 0, 0, 0, 0, 30, 0, 32, 0, 0, 0, 0, 0, 38, 0, 0, 0, 42, 0, 44, 0, 0, 0, 48, 0, 0, 0, 0, 0, 54, 0, 0, 0, 0, 0, 60, 0, 62, 0, 0, 0, 0, 0, 68, 0, 0, 0, 72, 0, 74, 0, 0, 0, 0, 0, 80, 0, 0, 0, 84, 0, 0, 0, 0, 0, 90]

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