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 A019361 #18 Jan 31 2018 11:41:35 %S A019361 2,3,11,37,41,47,53,61,71,79,83,89,101,103,137,151,167,179,191,197, %T A019361 211,223,227,229,233,239,241,269,283,317,331,359,373,379,383,409,431, %U A019361 457,461,467,499,503,509,521,557,563,571,587,599,601,607,617,643,647,653,659,661 %N A019361 Primes with primitive root 35. %H A019361 Vincenzo Librandi, <a href="/A019361/b019361.txt">Table of n, a(n) for n = 1..1000</a> %H A019361 <a href="/index/Pri#primes_root">Index entries for primes by primitive root</a> %t A019361 Select[Prime[Range[200]], MultiplicativeOrder[35, #] == # - 1 &] %K A019361 nonn,easy %O A019361 1,1 %A A019361 _David W. Wilson_