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 A106956 #17 Aug 05 2014 14:16:29 %S A106956 5,23,67,73,151,269,337,421,431,439,557,593,643,733,761,887,1117,1171, %T A106956 1229,1249,1319,1381,1511,1543,1667,1811,2063,2099,2213,2333,2389, %U A106956 2467,2539,2549,2609,2707,2741,2801,2927,3067,3169,3191,3343,3391 %N A106956 Primes of the form 4x^2+xy+5y^2, with x and y nonnegative. %C A106956 Discriminant=-79. %H A106956 Vincenzo Librandi and Ray Chandler, <a href="/A106956/b106956.txt">Table of n, a(n) for n = 1..10000</a> [First 1000 terms from Vincenzo Librandi] %H A106956 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 A106956 QuadPrimes2[4, 1, 5, 10000] (* see A106856 *) %K A106956 nonn,easy %O A106956 1,1 %A A106956 _T. D. Noe_, May 09 2005