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.

A066073 Composite numbers k such that sigma(k) - 1 is prime.

Table of values

n a(n)
1 6
2 10
3 14
4 15
5 20
6 21
7 24
8 26
9 30
10 33
11 34
12 35
13 38
14 40
15 44
16 46
17 51
18 52
19 55
20 57
21 58
22 60
23 63
24 65
25 74
26 76
27 78
28 84
29 85
30 86
31 88
32 90
33 92
34 93
35 96
36 105
37 111
38 114
39 117
40 118
41 120
42 123
43 124
44 126
45 130
46 135
47 136
48 141
49 143
50 145
51 147
52 153
53 155
54 158
55 161
56 164
57 166
58 168
59 172
60 174

List of values

[6, 10, 14, 15, 20, 21, 24, 26, 30, 33, 34, 35, 38, 40, 44, 46, 51, 52, 55, 57, 58, 60, 63, 65, 74, 76, 78, 84, 85, 86, 88, 90, 92, 93, 96, 105, 111, 114, 117, 118, 120, 123, 124, 126, 130, 135, 136, 141, 143, 145, 147, 153, 155, 158, 161, 164, 166, 168, 172, 174]