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.

A242340 Numbers k such that k*9^k-1 is semiprime.

Table of values

n a(n)
1 2
2 3
3 6
4 8
5 11
6 18
7 28
8 38
9 48
10 168
11 254
12 274
13 310
14 430

List of values

[2, 3, 6, 8, 11, 18, 28, 38, 48, 168, 254, 274, 310, 430]