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.

A127997 Numbers n such that (22^n - 1)/21 is prime.

Table of values

n a(n)
1 2
2 5
3 79
4 101
5 359
6 857
7 4463
8 9029
9 27823

List of values

[2, 5, 79, 101, 359, 857, 4463, 9029, 27823]