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 A106893 #17 Aug 05 2014 14:16:29 %S A106893 3,5,31,59,67,71,97,137,181,223,229,251,313,353,367,383,443,449,463, %T A106893 467,521,619,631,641,647,653,661,691,719,727,797,829,839,947,977,1013, %U A106893 1039,1049,1061,1093,1103,1213,1303,1321,1409,1453,1483,1499,1511 %N A106893 Primes of the form 3x^2-2xy+4y^2, with x and y nonnegative. %C A106893 Discriminant=-44. %H A106893 Vincenzo Librandi and Ray Chandler, <a href="/A106893/b106893.txt">Table of n, a(n) for n = 1..10000</a> [First 1000 terms from Vincenzo Librandi] %H A106893 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 A106893 QuadPrimes2[3, -2, 4, 10000] (* see A106856 *) %K A106893 nonn,easy %O A106893 1,1 %A A106893 _T. D. Noe_, May 09 2005