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 A174812 #20 Sep 08 2022 08:45:51 %S A174812 43,67,163,211,331,571,883,1723,2251,2851,3067,7963,9067,10243,10651, %T A174812 11491,11923,13267,14683,15667,17203,21067,24691,28603,32083,32803, %U A174812 34267,36523,38851,44563,48883,54331,57163,61051,73483,76771,83563,89443,94291,96763,98011,105667,121843 %N A174812 Primes of the form n^2+42. %H A174812 Vincenzo Librandi, <a href="/A174812/b174812.txt">Table of n, a(n) for n = 1..1000</a> %t A174812 Select[Range[1,400,2]^2 + 42, PrimeQ] (* _Vincenzo Librandi_, Jul 26 2012 *) %o A174812 (Magma) [a: n in [1..350 by 2] | IsPrime(a) where a is n^2+42]; %Y A174812 Cf. A104110 (associated n). %Y A174812 Subsequence of A002476. %K A174812 nonn,easy %O A174812 1,1 %A A174812 _Vincenzo Librandi_, Dec 02 2010