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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.

A372681 a(n) = phi(17 * n)/16.

Table of values

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

List of values

[1, 1, 2, 2, 4, 2, 6, 4, 6, 4, 10, 4, 12, 6, 8, 8, 17, 6, 18, 8, 12, 10, 22, 8, 20, 12, 18, 12, 28, 8, 30, 16, 20, 17, 24, 12, 36, 18, 24, 16, 40, 12, 42, 20, 24, 22, 46, 16, 42, 20, 34, 24, 52, 18, 40, 24, 36, 28, 58, 16, 60, 30, 36, 32, 48, 20, 66, 34, 44, 24, 70, 24, 72, 36, 40, 36, 60, 24]

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