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.

A242274 Numbers k such that k*3^k - 1 is semiprime.

Table of values

n a(n)
1 4
2 5
3 8
4 12
5 20
6 24
7 25
8 28
9 32
10 38
11 42
12 44
13 60
14 62
15 66
16 70
17 72
18 80
19 122
20 125
21 148
22 228
23 244
24 270
25 389
26 390
27 432
28 464
29 470
30 488
31 549
32 560
33 804
34 862

List of values

[4, 5, 8, 12, 20, 24, 25, 28, 32, 38, 42, 44, 60, 62, 66, 70, 72, 80, 122, 125, 148, 228, 244, 270, 389, 390, 432, 464, 470, 488, 549, 560, 804, 862]