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.

A274720 Odd numbers n such that n is not coprime to the multiplicative order of 2 mod n.

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 99
14 105
15 111
16 117
17 121
18 125
19 135
20 147
21 153
22 155
23 165
24 169
25 171
26 175
27 183
28 189
29 195
30 201
31 203
32 205
33 207
34 219
35 225
36 231
37 237
38 243
39 245
40 253
41 261
42 273
43 275
44 279
45 285
46 289
47 291
48 297
49 301
50 305
51 309
52 315
53 325
54 327

List of values

[9, 21, 25, 27, 39, 45, 49, 55, 57, 63, 75, 81, 99, 105, 111, 117, 121, 125, 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, 327]