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 A019351 #14 Mar 31 2014 04:08:04 %S A019351 7,11,13,17,31,37,41,59,83,89,107,109,113,137,157,179,181,223,227,229, %T A019351 233,251,257,277,281,347,353,373,397,401,419,421,443,463,467,487,491, %U A019351 541,563,569,587,593,607,617,641,683,709,733,751,761,809,823,829,857,877,881 %N A019351 Primes with primitive root 24. %H A019351 Vincenzo Librandi, <a href="/A019351/b019351.txt">Table of n, a(n) for n = 1..1000</a> %H A019351 <a href="/index/Pri#primes_root">Index entries for primes by primitive root</a> %t A019351 pr=24; Select[Prime[Range[200]], MultiplicativeOrder[pr, # ] == #-1 &] %K A019351 nonn %O A019351 1,1 %A A019351 _David W. Wilson_