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 A105879 #9 Mar 31 2024 15:03:24 %S A105879 2,3,5,13,17,31,41,47,59,61,83,89,97,101,103,131,139,167,173,199,227, %T A105879 229,241,251,257,269,271,283,293,307,349,383,397,433,461,467,479,503, %U A105879 509,521,523,563,577,587,593,601,619,643,647,677,691,719,727,733,761,773,787,797 %N A105879 Primes for which -7 is a primitive root. %H A105879 Vincenzo Librandi, <a href="/A105879/b105879.txt">Table of n, a(n) for n = 1..1000</a> %H A105879 <a href="/index/Pri#primes_root">Index entries for primes by primitive root</a> %t A105879 pr=-7; Select[Prime[Range[200]], MultiplicativeOrder[pr, # ] == #-1 &] %K A105879 nonn %O A105879 1,1 %A A105879 _N. J. A. Sloane_, Apr 24 2005