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.

A116046 n+phi(n)+phi(phi(n)) is a semiprime (A001358).

Table of values

n a(n)
1 2
2 3
3 6
4 7
5 8
6 11
7 14
8 18
9 23
10 27
11 29
12 31
13 34
14 37
15 38
16 42
17 45
18 47
19 53
20 55
21 59
22 63
23 65
24 66
25 69
26 73
27 74
28 83
29 89
30 90
31 91
32 93
33 103
34 105
35 107
36 109
37 110
38 117
39 119
40 123
41 125
42 127
43 129
44 130
45 131
46 138
47 139
48 143
49 145
50 150
51 151
52 157
53 167
54 174
55 175
56 179
57 182
58 183
59 185
60 186

List of values

[2, 3, 6, 7, 8, 11, 14, 18, 23, 27, 29, 31, 34, 37, 38, 42, 45, 47, 53, 55, 59, 63, 65, 66, 69, 73, 74, 83, 89, 90, 91, 93, 103, 105, 107, 109, 110, 117, 119, 123, 125, 127, 129, 130, 131, 138, 139, 143, 145, 150, 151, 157, 167, 174, 175, 179, 182, 183, 185, 186]