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 A051083 #15 Sep 08 2022 08:44:59
%S A051083 2,3,11,19,59,67,73,83,89,107,131,139,163,179,227,233,251,257,283,307,
%T A051083 331,347,353,419,443,467,499,523,563,571,577,587,593,601,619,643,683,
%U A051083 691,739,787,811,859,881,907,937,947,971,1019,1033,1049,1091,1097,1123,1153,1163,1171,1187
%N A051083 Primes p such that x^28 = -2 has a solution mod p.
%C A051083 Complement of A216745 relative to A000040. - _Vincenzo Librandi_, Sep 17 2012
%H A051083 Vincenzo Librandi, <a href="/A051083/b051083.txt">Table of n, a(n) for n = 1..1000</a>
%t A051083 ok[p_]:= Reduce[Mod[x^28 + 2, p] == 0, x, Integers] =!= False; Select[Prime[Range[500]], ok] (* _Vincenzo Librandi_, Sep 15 2012 *)
%o A051083 (PARI) /* see A051071 */
%o A051083 (Magma) [p: p in PrimesUpTo(1200) | exists(t){x : x in ResidueClassRing(p) | x^28 eq - 2}]; // _Vincenzo Librandi_, Sep 15 2012
%K A051083 nonn,easy
%O A051083 1,1
%A A051083 _N. J. A. Sloane_
%E A051083 More terms from _Joerg Arndt_, Jul 27 2011