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 A106931 #17 Aug 05 2014 14:16:29 %S A106931 5,13,29,53,61,149,157,173,181,229,269,277,293,317,389,397,421,461, %T A106931 541,557,613,653,661,709,733,773,821,829,853,877,941,997,1013,1061, %U A106931 1093,1109,1117,1213,1229,1301,1373,1429,1549,1597,1621,1637,1693 %N A106931 Primes of the form 4x^2+4xy+5y^2, with x and y nonnegative. %C A106931 Discriminant=-64. %H A106931 Vincenzo Librandi and Ray Chandler, <a href="/A106931/b106931.txt">Table of n, a(n) for n = 1..10000</a> [First 1000 terms from Vincenzo Librandi] %H A106931 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 A106931 QuadPrimes2[4, 4, 5, 10000] (* see A106856 *) %K A106931 nonn,easy %O A106931 1,1 %A A106931 _T. D. Noe_, May 09 2005