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.

A174164 Numbers n such that 1 = abs(sum{p-1|p is prime and divisor of n} - product{p-1|p is prime and divisor of n}).

Table of values

n a(n)
1 6
2 10
3 12
4 14
5 18
6 20
7 22
8 24
9 26
10 28
11 30
12 34
13 36
14 38
15 40
16 44
17 46
18 48
19 50
20 52
21 54
22 56
23 58
24 60
25 62
26 68
27 72
28 74
29 76
30 80
31 82
32 86
33 88
34 90
35 92
36 94
37 96
38 98
39 100
40 104
41 106
42 108
43 112
44 116
45 118
46 120
47 122
48 124
49 134
50 136
51 142
52 144
53 146
54 148
55 150
56 152
57 158
58 160
59 162
60 164
61 166
62 172

List of values

[6, 10, 12, 14, 18, 20, 22, 24, 26, 28, 30, 34, 36, 38, 40, 44, 46, 48, 50, 52, 54, 56, 58, 60, 62, 68, 72, 74, 76, 80, 82, 86, 88, 90, 92, 94, 96, 98, 100, 104, 106, 108, 112, 116, 118, 120, 122, 124, 134, 136, 142, 144, 146, 148, 150, 152, 158, 160, 162, 164, 166, 172]

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

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