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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.

A075857 Least common multiple of totient and cototient of n.

Table of values

n a(n)
1 0
2 1
3 2
4 2
5 4
6 4
7 6
8 4
9 6
10 12
11 10
12 8
13 12
14 24
15 56
16 8
17 16
18 12
19 18
20 24
21 36
22 60
23 22
24 16
25 20
26 84
27 18
28 48
29 28
30 88
31 30
32 16
33 260
34 144
35 264
36 24
37 36
38 180
39 120
40 48
41 40
42 60
43 42
44 120
45 168
46 264
47 46
48 32
49 42
50 60
51 608
52 168
53 52
54 36
55 120
56 96
57 252
58 420
59 58
60 176
61 60
62 480
63 108
64 32
65 816
66 460
67 66

List of values

[0, 1, 2, 2, 4, 4, 6, 4, 6, 12, 10, 8, 12, 24, 56, 8, 16, 12, 18, 24, 36, 60, 22, 16, 20, 84, 18, 48, 28, 88, 30, 16, 260, 144, 264, 24, 36, 180, 120, 48, 40, 60, 42, 120, 168, 264, 46, 32, 42, 60, 608, 168, 52, 36, 120, 96, 252, 420, 58, 176, 60, 480, 108, 32, 816, 460, 66]

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

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