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.

A057186 Numbers k such that (20^k+1)/21 is a prime.

Table of values

n a(n)
1 5
2 79
3 89
4 709
5 797
6 1163
7 6971
8 140053
9 177967
10 393257
11 463511

List of values

[5, 79, 89, 709, 797, 1163, 6971, 140053, 177967, 393257, 463511]