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.

A242338 Numbers k such that k*7^k-1 is semiprime.

Table of values

n a(n)
1 1
2 5
3 12
4 21
5 42
6 50
7 60
8 242
9 272

List of values

[1, 5, 12, 21, 42, 50, 60, 242, 272]