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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.

A363371 a(n) is the least prime p for which (p-1)*phi(p^n) is a nontotient, where phi is the Euler totient function (A000010).

Table of values

n a(n)
1 23
2 11
3 23
4 11
5 23
6 11
7 47
8 11
9 11
10 23
11 47
12 23
13 23
14 23
15 47
16 47
17 103
18 103
19 103
20 103
21 103
22 103
23 167
24 103
25 103
26 103
27 103
28 103
29 103
30 103
31 103
32 103
33 103
34 179
35 103
36 103
37 103
38 103
39 103
40 103
41 103
42 103
43 127
44 103
45 103
46 103
47 103
48 103
49 103
50 103
51 103
52 103
53 103
54 127
55 127
56 103
57 127
58 127
59 127

List of values

[23, 11, 23, 11, 23, 11, 47, 11, 11, 23, 47, 23, 23, 23, 47, 47, 103, 103, 103, 103, 103, 103, 167, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 179, 103, 103, 103, 103, 103, 103, 103, 103, 127, 103, 103, 103, 103, 103, 103, 103, 103, 103, 103, 127, 127, 103, 127, 127, 127]

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

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