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.

A139392 Odd noncyclic numbers; odd numbers n such that gcd(n,phi(n)) > 1.

Table of values

n a(n)
1 9
2 21
3 25
4 27
5 39
6 45
7 49
8 55
9 57
10 63
11 75
12 81
13 93
14 99
15 105
16 111
17 117
18 121
19 125
20 129
21 135
22 147
23 153
24 155
25 165
26 169
27 171
28 175
29 183
30 189
31 195
32 201
33 203
34 205
35 207
36 219
37 225
38 231
39 237
40 243
41 245
42 253
43 261
44 273
45 275
46 279
47 285
48 289
49 291
50 297
51 301
52 305
53 309
54 315
55 325

List of values

[9, 21, 25, 27, 39, 45, 49, 55, 57, 63, 75, 81, 93, 99, 105, 111, 117, 121, 125, 129, 135, 147, 153, 155, 165, 169, 171, 175, 183, 189, 195, 201, 203, 205, 207, 219, 225, 231, 237, 243, 245, 253, 261, 273, 275, 279, 285, 289, 291, 297, 301, 305, 309, 315, 325]