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.

A353683 Numbers k for which phi(sigma(k)) > phi(k).

Table of values

n a(n)
1 2
2 4
3 6
4 8
5 9
6 10
7 12
8 14
9 16
10 18
11 20
12 21
13 22
14 24
15 25
16 28
17 30
18 32
19 34
20 36
21 40
22 42
23 44
24 46
25 48
26 50
27 52
28 54
29 56
30 60
31 62
32 63
33 64
34 66
35 68
36 70
37 72
38 75
39 76
40 78
41 80
42 81
43 84
44 88
45 90
46 92
47 93
48 94
49 96
50 98
51 100
52 102
53 105
54 106
55 108
56 110
57 112
58 114
59 120
60 124
61 126
62 128
63 130
64 132
65 136
66 138
67 140
68 142
69 144
70 148
71 150
72 152
73 154
74 156
75 160

List of values

[2, 4, 6, 8, 9, 10, 12, 14, 16, 18, 20, 21, 22, 24, 25, 28, 30, 32, 34, 36, 40, 42, 44, 46, 48, 50, 52, 54, 56, 60, 62, 63, 64, 66, 68, 70, 72, 75, 76, 78, 80, 81, 84, 88, 90, 92, 93, 94, 96, 98, 100, 102, 105, 106, 108, 110, 112, 114, 120, 124, 126, 128, 130, 132, 136, 138, 140, 142, 144, 148, 150, 152, 154, 156, 160]