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 A106975 #17 Aug 05 2014 14:16:29 %S A106975 13,67,199,223,313,499,523,991,1009,1021,1153,1213,1399,1483,1669, %T A106975 1789,1831,1861,1879,2089,2137,2287,2377,2551,2713,2797,2833,3061, %U A106975 3271,3319,3457,3583,3823,3853,3943,4027,4051,4177,4789,5011,5023 %N A106975 Primes of the form 4x^2+3xy+6y^2, with x and y nonnegative. %C A106975 Discriminant=-87. %H A106975 Vincenzo Librandi and Ray Chandler, <a href="/A106975/b106975.txt">Table of n, a(n) for n = 1..10000</a> [First 1000 terms from Vincenzo Librandi] %H A106975 N. J. A. Sloane et al., <a href="https://oeis.org/wiki/Binary_Quadratic_Forms_and_OEIS">Binary Quadratic Forms and OEIS</a> (Index to related sequences, programs, references) %t A106975 QuadPrimes2[4, 3, 6, 10000] (* see A106856 *) %K A106975 nonn,easy %O A106975 1,1 %A A106975 _T. D. Noe_, May 09 2005