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 A191069 #12 Sep 08 2022 08:45:57 %S A191069 5,11,31,41,43,61,71,79,83,89,97,101,103,113,127,131,139,149,151,157, %T A191069 163,167,193,197,223,229,241,251,257,277,281,283,337,347,349,383,389, %U A191069 397,401,409,419,431,433,439,443,449,461,467,487,491,499,521,541,557 %N A191069 Primes p that have Kronecker symbol (p|38) = -1. %C A191069 Originally erroneously named "Primes that are not squares mod 38", which contains this as a subsequence. - _M. F. Hasler_, Jan 18 2016 %H A191069 Vincenzo Librandi, <a href="/A191069/b191069.txt">Table of n, a(n) for n = 1..1000</a> %t A191069 Select[Prime[Range[200]], JacobiSymbol[#,38]==-1&] %o A191069 (Magma) [p: p in PrimesUpTo(557) | KroneckerSymbol(p, 38) eq -1]; // _Bruno Berselli_, Sep 11 2012 %K A191069 nonn,easy %O A191069 1,1 %A A191069 _T. D. Noe_, May 25 2011 %E A191069 Definition corrected, following a suggestion from _David Broadhurst_, by _M. F. Hasler_, Jan 18 2016