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.

A230225 Primes p such that 2*p+1 and 2*p+3 are not prime.

Table of values

n a(n)
1 31
2 37
3 59
4 61
5 71
6 79
7 101
8 103
9 107
10 109
11 149
12 151
13 163
14 181
15 211
16 241
17 257
18 263
19 271
20 311
21 313
22 317
23 331
24 347
25 367
26 373
27 389
28 401
29 421
30 433
31 449
32 457
33 461
34 479
35 499
36 521
37 541
38 569
39 571
40 577
41 587
42 601
43 619
44 631
45 661
46 673
47 677
48 691
49 701
50 709
51 727
52 733
53 751

List of values

[31, 37, 59, 61, 71, 79, 101, 103, 107, 109, 149, 151, 163, 181, 211, 241, 257, 263, 271, 311, 313, 317, 331, 347, 367, 373, 389, 401, 421, 433, 449, 457, 461, 479, 499, 521, 541, 569, 571, 577, 587, 601, 619, 631, 661, 673, 677, 691, 701, 709, 727, 733, 751]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement.