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 A104110 #14 Sep 08 2022 08:45:17 %S A104110 1,5,11,13,17,23,29,41,47,53,55,89,95,101,103,107,109,115,121,125,131, %T A104110 145,157,169,179,181,185,191,197,211,221,233,239,247,271,277,289,299, %U A104110 307,311,313,325,349,355,359,361,367,403,421,425,433,443,457,467,493 %N A104110 Nonnegative numbers k such that k^2 + 42 is prime. %H A104110 Harvey P. Dale, <a href="/A104110/b104110.txt">Table of n, a(n) for n = 1..1000</a> %t A104110 Select[Range[1,500,2],PrimeQ[#^2+42]&] (* _Harvey P. Dale_, May 25 2017 *) %o A104110 (PARI) for(i=0,422,if(isprime(i^2+42),print1(i ","))) %o A104110 (Magma) [ n: n in [0..500] | IsPrime(n^2 + 42) ] // _Vincenzo Librandi_, Nov 13 2010 %K A104110 nonn %O A104110 1,2 %A A104110 _Gerald McGarvey_, Mar 04 2005