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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.

A049200 Euler totient function phi applied to the n-th squarefree number.

Table of values

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

List of values

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

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