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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.

A225679 Numerators of phi(k)/k, as k runs through the squarefree numbers (A005117).

Table of values

n a(n)
1 1
2 1
3 2
4 4
5 1
6 6
7 2
8 10
9 12
10 3
11 8
12 16
13 18
14 4
15 5
16 22
17 6
18 28
19 4
20 30
21 20
22 8
23 24
24 36
25 9
26 8
27 40
28 2
29 42
30 11
31 46
32 32
33 52
34 8
35 12
36 14
37 58
38 60
39 15
40 48
41 10
42 66
43 44
44 12
45 70
46 72
47 18
48 60
49 4
50 78
51 20
52 82
53 64
54 21
55 56
56 88
57 72
58 20
59 23
60 72
61 96
62 100
63 16
64 102
65 16
66 26
67 106
68 108
69 4

List of values

[1, 1, 2, 4, 1, 6, 2, 10, 12, 3, 8, 16, 18, 4, 5, 22, 6, 28, 4, 30, 20, 8, 24, 36, 9, 8, 40, 2, 42, 11, 46, 32, 52, 8, 12, 14, 58, 60, 15, 48, 10, 66, 44, 12, 70, 72, 18, 60, 4, 78, 20, 82, 64, 21, 56, 88, 72, 20, 23, 72, 96, 100, 16, 102, 16, 26, 106, 108, 4]

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