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.

A067386 Primes p such that p+1 and p-1 have the same number of distinct prime factors.

Table of values

n a(n)
1 3
2 11
3 13
4 19
5 23
6 37
7 47
8 53
9 73
10 97
11 107
12 131
13 139
14 163
15 181
16 193
17 229
18 239
19 281
20 307
21 311
22 349
23 373
24 379
25 383
26 409
27 439
28 443
29 487
30 491
31 521
32 577
33 599
34 601
35 617
36 619
37 643
38 683
39 701
40 709
41 727
42 739
43 743
44 761
45 811
46 821
47 827
48 829
49 853
50 863
51 881
52 883
53 919
54 937

List of values

[3, 11, 13, 19, 23, 37, 47, 53, 73, 97, 107, 131, 139, 163, 181, 193, 229, 239, 281, 307, 311, 349, 373, 379, 383, 409, 439, 443, 487, 491, 521, 577, 599, 601, 617, 619, 643, 683, 701, 709, 727, 739, 743, 761, 811, 821, 827, 829, 853, 863, 881, 883, 919, 937]