cp's OEIS Frontend

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.

A306528 Numbers k such that gcd(k, phi(k)) = gcd(k, psi(k)).

Table of values

n a(n)
1 1
2 2
3 3
4 4
5 5
6 7
7 8
8 9
9 10
10 11
11 13
12 14
13 16
14 17
15 19
16 20
17 22
18 23
19 25
20 26
21 27
22 28
23 29
24 31
25 32
26 34
27 35
28 37
29 38
30 40
31 41
32 42
33 43
34 44
35 46
36 47
37 49
38 50
39 52
40 53
41 56
42 58
43 59
44 61
45 62
46 64
47 65
48 67
49 68
50 70
51 71
52 73
53 74
54 76
55 77
56 78
57 79
58 80
59 81
60 82
61 83
62 84
63 85
64 86
65 88
66 89
67 92
68 94
69 97
70 98
71 100

List of values

[1, 2, 3, 4, 5, 7, 8, 9, 10, 11, 13, 14, 16, 17, 19, 20, 22, 23, 25, 26, 27, 28, 29, 31, 32, 34, 35, 37, 38, 40, 41, 42, 43, 44, 46, 47, 49, 50, 52, 53, 56, 58, 59, 61, 62, 64, 65, 67, 68, 70, 71, 73, 74, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 88, 89, 92, 94, 97, 98, 100]

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

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