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.

A179780 Primes, q, such that for three consecutive primes, p, q & r, with p neither (q - p)/(r - q) nor (r - q)/(q - p) is an integer.

Table of values

n a(n)
1 23
2 37
3 47
4 67
5 79
6 83
7 89
8 113
9 127
10 131
11 163
12 167
13 233
14 251
15 277
16 293
17 307
18 317
19 331
20 337
21 353
22 359
23 367
24 379
25 383
26 389
27 409
28 439
29 443
30 449
31 479
32 503
33 547
34 557
35 577
36 587
37 613
38 631
39 647
40 677
41 683
42 691
43 701
44 709
45 719
46 727
47 739
48 751
49 757
50 773
51 787
52 797
53 839
54 853
55 863

List of values

[23, 37, 47, 67, 79, 83, 89, 113, 127, 131, 163, 167, 233, 251, 277, 293, 307, 317, 331, 337, 353, 359, 367, 379, 383, 389, 409, 439, 443, 449, 479, 503, 547, 557, 577, 587, 613, 631, 647, 677, 683, 691, 701, 709, 719, 727, 739, 751, 757, 773, 787, 797, 839, 853, 863]

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

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