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 A045318 #20 Jun 26 2022 23:24:53
%S A045318 5,7,17,19,29,31,37,41,43,53,61,67,73,79,89,97,101,103,113,127,137,
%T A045318 139,149,151,157,163,173,193,197,199,211,223,233,241,257,269,271,281,
%U A045318 283,293,307,317,331,337,349,353,367,373,379,389,397
%N A045318 Primes p such that x^8 = 3 has no solution mod p.
%C A045318 Complement of A045317 relative to A000040. - _Vincenzo Librandi_, Sep 19 2012
%H A045318 Vincenzo Librandi, <a href="/A045318/b045318.txt">Table of n, a(n) for n = 1..1000</a>
%t A045318 ok[p_]:= Reduce[Mod[x^8 - 3, p] == 0, x, Integers] == False; Select[Prime[Range[200]], ok] (* _Vincenzo Librandi_, Sep 19 2012 *)
%o A045318 (Magma) [p: p in PrimesUpTo(500) | not exists{x : x in ResidueClassRing(p) | x^8 eq 3} ]; // _Vincenzo Librandi_, Sep 19 2012
%Y A045318 Cf. A000040, A045317, A301916, A320481.
%K A045318 nonn,easy
%O A045318 1,1
%A A045318 _N. J. A. Sloane_