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.

A280450 Smallest k > 2n+1 such that phi(k) = phi(2n+1).

Table of values

n a(n)
1 4
2 8
3 9
4 14
5 22
6 21
7 16
8 32
9 27
10 26
11 46
12 33
13 38
14 58
15 62
16 44
17 39
18 57
19 45
20 55
21 49
22 52
23 94
24 86
25 64
26 106
27 75
28 63
29 118
30 77
31 74
32 104
33 134
34 92
35 142
36 91
37 82
38 93
39 158
40 162
41 166
42 128
43 116
44 115
45 95
46 99
47 111
48 119
49 122
50 125
51 206
52 112
53 214
54 133
55 117
56 145
57 178
58 135
59 153
60 242

List of values

[4, 8, 9, 14, 22, 21, 16, 32, 27, 26, 46, 33, 38, 58, 62, 44, 39, 57, 45, 55, 49, 52, 94, 86, 64, 106, 75, 63, 118, 77, 74, 104, 134, 92, 142, 91, 82, 93, 158, 162, 166, 128, 116, 115, 95, 99, 111, 119, 122, 125, 206, 112, 214, 133, 117, 145, 178, 135, 153, 242]