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 A019364 #14 Mar 31 2014 04:43:57 %S A019364 2,11,17,29,37,47,53,59,73,79,83,97,109,113,127,167,173,199,211,227, %T A019364 229,233,239,241,257,269,359,367,383,389,397,409,421,431,439,457,479, %U A019364 523,569,571,577,587,607,641,653,677,683,701,709,727,743,751,797,809,827,839,857 %N A019364 Primes with primitive root 39. %H A019364 Vincenzo Librandi, <a href="/A019364/b019364.txt">Table of n, a(n) for n = 1..1000</a> %H A019364 <a href="/index/Pri#primes_root">Index entries for primes by primitive root</a> %t A019364 pr=39; Select[Prime[Range[200]], MultiplicativeOrder[pr, # ] == #-1 &] %K A019364 nonn %O A019364 1,1 %A A019364 _David W. Wilson_