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 A191047 #15 Sep 08 2022 08:45:57 %S A191047 19,29,37,41,47,53,67,71,79,89,101,103,107,109,127,131,137,163,167, %T A191047 173,179,199,229,239,251,269,281,307,313,331,337,347,349,353,359,367, %U A191047 379,383,389,397,401,419,421,431,433,439,443,449,467,479,491,499,541,563 %N A191047 Primes p that have Kronecker symbol (p|78) = 1. %C A191047 Originally erroneously named "Primes that are squares mod 78", which would be A267455. - _M. F. Hasler_, Jan 18 2016 %H A191047 Vincenzo Librandi, <a href="/A191047/b191047.txt">Table of n, a(n) for n = 1..1000</a> %t A191047 Select[Prime[Range[200]], JacobiSymbol[#,78]==1&] %o A191047 (Magma) [p: p in PrimesUpTo(563) | KroneckerSymbol(p, 78) eq 1]; // _Vincenzo Librandi_, Sep 11 2012 %o A191047 (PARI) is_A191047(p)=kronecker(p, 78)==1&&isprime(p) \\ _M. F. Hasler_, Jan 18 2016 %K A191047 nonn,easy %O A191047 1,1 %A A191047 _T. D. Noe_, May 25 2011 %E A191047 Definition corrected, following a suggestion from _David Broadhurst_, by _M. F. Hasler_, Jan 18 2016