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 A147297 #14 Sep 08 2022 08:45:38 %S A147297 31,307,463,1123,1723,3307,4831,6007,8011,10303,11131,13807,20023, %T A147297 23563,26083,30103,35911,43891,60271,86143,95791,108571,127807,136531, %U A147297 145543,164431,205663,239611,276151,284623,288907,366631,371491,386263,459007 %N A147297 Primes of the form (2k)^2 + 3(2k + 1)^2. %o A147297 (Maxima) makelist((2*k)^2+3*(2*k+1)^2,k,1,100)$ sublist(%,primep); %o A147297 (Magma) [ a: n in [1..900] | IsPrime(a) where a is (2*n)^2 + 3*(2*n+1)^2] // _Vincenzo Librandi_, Nov 25 2010 %Y A147297 First thirteen terms are a subset of A073337, A002383 and A085104. %K A147297 nonn %O A147297 1,1 %A A147297 _Kieren MacMillan_, Nov 05 2008 %E A147297 More terms from _Vincenzo Librandi_, Apr 28 2010