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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.

A080400 Largest squarefree number dividing phi(n).

Table of values

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

List of values

[1, 1, 2, 2, 2, 2, 6, 2, 6, 2, 10, 2, 6, 6, 2, 2, 2, 6, 6, 2, 6, 10, 22, 2, 10, 6, 6, 6, 14, 2, 30, 2, 10, 2, 6, 6, 6, 6, 6, 2, 10, 6, 42, 10, 6, 22, 46, 2, 42, 10, 2, 6, 26, 6, 10, 6, 6, 14, 58, 2, 30, 30, 6, 2, 6, 10, 66, 2, 22, 6, 70, 6, 6, 6, 10, 6, 30, 6, 78, 2, 6, 10, 82, 6, 2, 42, 14, 10, 22]

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