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.

A353685 Numbers k for which phi(sigma(k)) <= phi(k).

Table of values

n a(n)
1 1
2 3
3 5
4 7
5 11
6 13
7 15
8 17
9 19
10 23
11 26
12 27
13 29
14 31
15 33
16 35
17 37
18 38
19 39
20 41
21 43
22 45
23 47
24 49
25 51
26 53
27 55
28 57
29 58
30 59
31 61
32 65
33 67
34 69
35 71
36 73
37 74
38 77
39 79
40 82
41 83
42 85
43 86
44 87
45 89
46 91
47 95
48 97
49 99
50 101
51 103
52 104
53 107
54 109
55 111
56 113
57 115
58 116
59 117
60 118
61 119
62 121
63 122
64 123
65 125
66 127
67 129
68 131
69 133
70 134
71 135
72 137
73 139
74 141
75 143

List of values

[1, 3, 5, 7, 11, 13, 15, 17, 19, 23, 26, 27, 29, 31, 33, 35, 37, 38, 39, 41, 43, 45, 47, 49, 51, 53, 55, 57, 58, 59, 61, 65, 67, 69, 71, 73, 74, 77, 79, 82, 83, 85, 86, 87, 89, 91, 95, 97, 99, 101, 103, 104, 107, 109, 111, 113, 115, 116, 117, 118, 119, 121, 122, 123, 125, 127, 129, 131, 133, 134, 135, 137, 139, 141, 143]