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 A038908 #8 Jul 08 2025 22:28:45 %S A038908 5,7,13,19,23,43,47,53,59,61,71,73,79,89,109,113,127,137,139,151,179, %T A038908 191,193,211,241,251,257,269,271,277,283,307,311,317,337,349,353,373, %U A038908 383,389,401,409,419,439,443,449 %N A038908 Primes p such that 33 is not a square mod p. %H A038908 Vincenzo Librandi, <a href="/A038908/b038908.txt">Table of n, a(n) for n = 1..1000</a> %t A038908 Select[Prime@Range[120], JacobiSymbol[33, #] == -1 &] (* _Vincenzo Librandi_, Sep 09 2012 *) %K A038908 nonn %O A038908 1,1 %A A038908 _N. J. A. Sloane_ %E A038908 Offset changed from 0 to 1 by _Vincenzo Librandi_, Sep 09 2012