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.

A174653 Semiprimes s such that neither s-1 nor s+1 is semiprime.

Table of values

n a(n)
1 4
2 6
3 46
4 49
5 51
6 55
7 62
8 65
9 69
10 74
11 77
12 82
13 91
14 106
15 111
16 115
17 129
18 155
19 161
20 166
21 169
22 183
23 185
24 187
25 194
26 209
27 221
28 226
29 235
30 237
31 247
32 249
33 259
34 262
35 265
36 267
37 274
38 278
39 287
40 289
41 291
42 295
43 305
44 309
45 314
46 319
47 321
48 323
49 329
50 339
51 341
52 346
53 355
54 358
55 365

List of values

[4, 6, 46, 49, 51, 55, 62, 65, 69, 74, 77, 82, 91, 106, 111, 115, 129, 155, 161, 166, 169, 183, 185, 187, 194, 209, 221, 226, 235, 237, 247, 249, 259, 262, 265, 267, 274, 278, 287, 289, 291, 295, 305, 309, 314, 319, 321, 323, 329, 339, 341, 346, 355, 358, 365]