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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.

A358039 a(n) is the Euler totient function phi applied to the n-th cubefree number.

Table of values

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

List of values

[1, 1, 2, 2, 4, 2, 6, 6, 4, 10, 4, 12, 6, 8, 16, 6, 18, 8, 12, 10, 22, 20, 12, 12, 28, 8, 30, 20, 16, 24, 12, 36, 18, 24, 40, 12, 42, 20, 24, 22, 46, 42, 20, 32, 24, 52, 40, 36, 28, 58, 16, 60, 30, 36, 48, 20, 66, 32, 44, 24, 70, 72, 36, 40, 36, 60, 24, 78, 40]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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