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.

A271568 Squarefree semiprimes n such that phi(n) - 1 is prime.

Table of values

n a(n)
1 10
2 14
3 15
4 21
5 26
6 33
7 35
8 38
9 39
10 51
11 62
12 65
13 69
14 77
15 86
16 91
17 93
18 95
19 111
20 122
21 123
22 129
23 133
24 146
25 159
26 161
27 201
28 203
29 206
30 209
31 213
32 215
33 217
34 218
35 221
36 249
37 278
38 287
39 291
40 299
41 301
42 302
43 303
44 305
45 321
46 335
47 339
48 362
49 371
50 381
51 386
52 395
53 398
54 403

List of values

[10, 14, 15, 21, 26, 33, 35, 38, 39, 51, 62, 65, 69, 77, 86, 91, 93, 95, 111, 122, 123, 129, 133, 146, 159, 161, 201, 203, 206, 209, 213, 215, 217, 218, 221, 249, 278, 287, 291, 299, 301, 302, 303, 305, 321, 335, 339, 362, 371, 381, 386, 395, 398, 403]