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 A038945 #9 Jul 08 2025 22:33:03 %S A038945 2,5,7,13,29,37,47,61,67,73,79,83,97,101,131,137,139,163,167,179,181, %T A038945 191,193,197,199,211,223,227,251,269,293,307,311,317,353,383,389,397, %U A038945 419,439,457,463,487,491,521,557 %N A038945 Primes p such that 65 is a square mod p. %H A038945 Vincenzo Librandi, <a href="/A038945/b038945.txt">Table of n, a(n) for n = 1..1000</a> %t A038945 Select[Prime[Range[100]], ! JacobiSymbol[65, #] == -1 &] (* _Vincenzo Librandi_, Sep 08 2012 *) %K A038945 nonn %O A038945 1,1 %A A038945 _N. J. A. Sloane_