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.

A067800 Nonprime numbers k such that phi(k) > k/2.

Table of values

n a(n)
1 1
2 9
3 15
4 21
5 25
6 27
7 33
8 35
9 39
10 45
11 49
12 51
13 55
14 57
15 63
16 65
17 69
18 75
19 77
20 81
21 85
22 87
23 91
24 93
25 95
26 99
27 111
28 115
29 117
30 119
31 121
32 123
33 125
34 129
35 133
36 135
37 141
38 143
39 145
40 147
41 153
42 155
43 159
44 161
45 169
46 171
47 175
48 177
49 183
50 185
51 187
52 189
53 201
54 203
55 205
56 207
57 209
58 213
59 215

List of values

[1, 9, 15, 21, 25, 27, 33, 35, 39, 45, 49, 51, 55, 57, 63, 65, 69, 75, 77, 81, 85, 87, 91, 93, 95, 99, 111, 115, 117, 119, 121, 123, 125, 129, 133, 135, 141, 143, 145, 147, 153, 155, 159, 161, 169, 171, 175, 177, 183, 185, 187, 189, 201, 203, 205, 207, 209, 213, 215]