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 A059262 #9 Sep 08 2022 08:45:02
%S A059262 7,13,19,37,61,67,73,79,97,103,109,139,151,163,181,193,199,211,241,
%T A059262 271,307,313,331,337,349,367,373,379,409,421,433,463,487,523,541,547,
%U A059262 571,577,607,613,619,631,661,673,709,739,751,757,769,787,811,823,829,853
%N A059262 Primes p such that x^9 = 2 has no solution mod p.
%C A059262 Complement of A049596 relative to A000040.
%C A059262 Coincides for the first 207 terms with the sequence of primes p such that x^27 = 2 has no solution mod p (first divergence is at 3943, cf. A059354).
%H A059262 Vincenzo Librandi, <a href="/A059262/b059262.txt">Table of n, a(n) for n = 1..1000</a>
%t A059262 ok[p_] := Reduce[Mod[x^9 - 2, p] == 0, x, Integers] == False; Select[Prime[Range[150]], ok] (* _Vincenzo Librandi_, Sep 20 2012 *)
%o A059262 (Magma) [p: p in PrimesUpTo(900) | not exists{x: x in ResidueClassRing(p) | x^9 eq 2}]; // _Vincenzo Librandi_, Sep 20 2012
%Y A059262 Cf. A000040, A049596, A059354.
%K A059262 easy,nonn
%O A059262 1,1
%A A059262 _Klaus Brockhaus_, Jan 23 2001