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.

A242702 Semiprimes n such that n^2+n+41 is also semiprime.

Table of values

n a(n)
1 49
2 65
3 82
4 87
5 91
6 121
7 122
8 123
9 143
10 155
11 159
12 161
13 178
14 185
15 187
16 201
17 205
18 209
19 213
20 215
21 217
22 218
23 237
24 249
25 259
26 265
27 278
28 287
29 289
30 291
31 295
32 298
33 299
34 301
35 302
36 309
37 314
38 321
39 326
40 327
41 329
42 334
43 361
44 381
45 395
46 407
47 422
48 427
49 445
50 451
51 454
52 466
53 471

List of values

[49, 65, 82, 87, 91, 121, 122, 123, 143, 155, 159, 161, 178, 185, 187, 201, 205, 209, 213, 215, 217, 218, 237, 249, 259, 265, 278, 287, 289, 291, 295, 298, 299, 301, 302, 309, 314, 321, 326, 327, 329, 334, 361, 381, 395, 407, 422, 427, 445, 451, 454, 466, 471]