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.

A291788 Numbers n whose trajectory under the map k -> (psi(k)+phi(k))/2 (A291784) grows without limit.

Table of values

n a(n)
1 45
2 48
3 50
4 55
5 56
6 60
7 68
8 69
9 70
10 72
11 74
12 75
13 76
14 77
15 78
16 80
17 84
18 85
19 86
20 87
21 88
22 90
23 91
24 92
25 93
26 94
27 95
28 96
29 98
30 99
31 102
32 104
33 105
34 108
35 111
36 112
37 115
38 116
39 117
40 118
41 119
42 120
43 122
44 123
45 124
46 126
47 133
48 134
49 135
50 136
51 140
52 141
53 142
54 143
55 144
56 145
57 146
58 147
59 152

List of values

[45, 48, 50, 55, 56, 60, 68, 69, 70, 72, 74, 75, 76, 77, 78, 80, 84, 85, 86, 87, 88, 90, 91, 92, 93, 94, 95, 96, 98, 99, 102, 104, 105, 108, 111, 112, 115, 116, 117, 118, 119, 120, 122, 123, 124, 126, 133, 134, 135, 136, 140, 141, 142, 143, 144, 145, 146, 147, 152]