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.

A079147 Primes p such that p+1 has at most 2 prime factors, counted with multiplicity; i.e., primes p such that bigomega(p+1) = A001222(p+1) <= 2.

Table of values

n a(n)
1 2
2 3
3 5
4 13
5 37
6 61
7 73
8 157
9 193
10 277
11 313
12 397
13 421
14 457
15 541
16 613
17 661
18 673
19 733
20 757
21 877
22 997
23 1093
24 1153
25 1201
26 1213
27 1237
28 1321
29 1381
30 1453
31 1621
32 1657
33 1753
34 1873
35 1933
36 1993
37 2017
38 2137
39 2341
40 2473
41 2557
42 2593
43 2797
44 2857
45 2917
46 3061
47 3217
48 3253

List of values

[2, 3, 5, 13, 37, 61, 73, 157, 193, 277, 313, 397, 421, 457, 541, 613, 661, 673, 733, 757, 877, 997, 1093, 1153, 1201, 1213, 1237, 1321, 1381, 1453, 1621, 1657, 1753, 1873, 1933, 1993, 2017, 2137, 2341, 2473, 2557, 2593, 2797, 2857, 2917, 3061, 3217, 3253]