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 A038957 #16 Jul 08 2025 22:34:33 %S A038957 2,3,19,23,37,41,61,67,71,73,79,89,97,109,127,137,149,173,181,211,223, %T A038957 227,251,257,269,283,293,311,317,347,349,353,359,367,373,383,389,397, %U A038957 401,419,439,457,461,463,479,487 %N A038957 Primes p such that 73 is a square mod p. %H A038957 Vincenzo Librandi, <a href="/A038957/b038957.txt">Table of n, a(n) for n = 1..1000</a> %t A038957 Select[Prime[Range[110]], ! JacobiSymbol[73, #] == -1 &] (* _Vincenzo Librandi_, Sep 08 2012 *) %K A038957 nonn %O A038957 1,1 %A A038957 _N. J. A. Sloane_