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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.

A372672 a(n) = phi(10 * n)/4.

Table of values

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

List of values

[1, 2, 2, 4, 5, 4, 6, 8, 6, 10, 10, 8, 12, 12, 10, 16, 16, 12, 18, 20, 12, 20, 22, 16, 25, 24, 18, 24, 28, 20, 30, 32, 20, 32, 30, 24, 36, 36, 24, 40, 40, 24, 42, 40, 30, 44, 46, 32, 42, 50, 32, 48, 52, 36, 50, 48, 36, 56, 58, 40, 60, 60, 36, 64, 60, 40, 66, 64, 44, 60, 70, 48, 72, 72, 50, 72, 60, 48]

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