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 A040100 #11 Jul 08 2025 22:47:16
%S A040100 3,5,11,13,17,19,29,37,41,43,53,59,61,67,83,97,101,107,109,131,137,
%T A040100 139,149,157,163,173,179,181,193,197,211,227,229,241,251,269,277,283,
%U A040100 293,307,313,317,331,347,349,373
%N A040100 Primes p such that x^4 = 2 has no solution mod p.
%C A040100 Complement of A040098 relative to A000040. - _Vincenzo Librandi_, Sep 17 2012
%H A040100 Vincenzo Librandi, <a href="/A040100/b040100.txt">Table of n, a(n) for n = 1..1000</a>
%t A040100 ok[p_]:= Reduce[Mod[x^4 - 2, p] == 0, x, Integers] == False;Select[Prime[Range[100]], ok] (* _Vincenzo Librandi_, Sep 17 2012 *)
%o A040100 (Magma) [p: p in PrimesUpTo(500) | not exists{x : x in ResidueClassRing(p) | x^4 eq 2} ]; // _Vincenzo Librandi_, Sep 17 2012
%K A040100 nonn,easy
%O A040100 1,1
%A A040100 _N. J. A. Sloane_