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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.

A320045 Smallest k such that (Z/kZ)* is isomorphic to (Z/nZ)*.

Table of values

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

List of values

[1, 1, 3, 3, 5, 3, 7, 8, 7, 5, 11, 8, 13, 7, 15, 15, 17, 7, 19, 15, 21, 11, 23, 24, 25, 13, 19, 21, 29, 15, 31, 32, 33, 17, 35, 21, 37, 19, 35, 40, 41, 21, 43, 33, 35, 23, 47, 40, 43, 25, 51, 35, 53, 19, 55, 56, 57, 29, 59, 40, 61, 31, 63, 51, 65, 33, 67, 51, 69, 35]

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

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