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.
%I A019349 #14 Mar 31 2014 04:08:19 %S A019349 5,17,19,31,37,41,47,53,71,83,107,131,139,191,193,199,211,223,227,233, %T A019349 269,281,283,307,311,317,337,347,367,383,389,397,409,421,487,491,509, %U A019349 523,547,563,569,593,599,601,647,653,659,709,719,739,761,773,787,797,809,823 %N A019349 Primes with primitive root 22. %H A019349 Vincenzo Librandi, <a href="/A019349/b019349.txt">Table of n, a(n) for n = 1..1000</a> %H A019349 <a href="/index/Pri#primes_root">Index entries for primes by primitive root</a> %t A019349 pr=22; Select[Prime[Range[200]], MultiplicativeOrder[pr, # ] == #-1 &] %K A019349 nonn %O A019349 1,1 %A A019349 _David W. Wilson_