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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.

A220345 Ratio of Jordan's totient to Carmichael's lambda function: a(n) = A007434(n) / A002322(n).

Table of values

n a(n)
1 1
2 3
3 4
4 6
5 6
6 12
7 8
8 24
9 12
10 18
11 12
12 48
13 14
14 24
15 48
16 48
17 18
18 36
19 20
20 72
21 64
22 36
23 24
24 192
25 30
26 42
27 36
28 96
29 30
30 144
31 32
32 96
33 96
34 54
35 96
36 144
37 38
38 60
39 112
40 288
41 42
42 192
43 44
44 144
45 144
46 72
47 48
48 384
49 56
50 90
51 144
52 168
53 54
54 108
55 144
56 384
57 160
58 90
59 60
60 576
61 62
62 96

List of values

[1, 3, 4, 6, 6, 12, 8, 24, 12, 18, 12, 48, 14, 24, 48, 48, 18, 36, 20, 72, 64, 36, 24, 192, 30, 42, 36, 96, 30, 144, 32, 96, 96, 54, 96, 144, 38, 60, 112, 288, 42, 192, 44, 144, 144, 72, 48, 384, 56, 90, 144, 168, 54, 108, 144, 384, 160, 90, 60, 576, 62, 96]

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

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