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.

A290434 Semiprimes of the form pq such that p+q+1 is prime.

Table of values

n a(n)
1 4
2 9
3 21
4 25
5 35
6 39
7 55
8 57
9 65
10 77
11 85
12 111
13 115
14 121
15 129
16 155
17 161
18 185
19 187
20 201
21 203
22 205
23 209
24 221
25 235
26 237
27 265
28 291
29 299
30 305
31 309
32 319
33 323
34 327
35 335
36 341
37 365
38 371
39 377
40 381
41 391
42 413
43 415
44 437
45 451
46 485
47 489
48 493
49 497
50 505
51 515
52 517
53 529
54 535
55 579

List of values

[4, 9, 21, 25, 35, 39, 55, 57, 65, 77, 85, 111, 115, 121, 129, 155, 161, 185, 187, 201, 203, 205, 209, 221, 235, 237, 265, 291, 299, 305, 309, 319, 323, 327, 335, 341, 365, 371, 377, 381, 391, 413, 415, 437, 451, 485, 489, 493, 497, 505, 515, 517, 529, 535, 579]