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 A106894 #17 Aug 05 2014 14:16:29 %S A106894 3,71,101,103,239,277,307,401,457,571,617,733,853,929,1051,1153,1223, %T A106894 1259,1283,1301,1381,1471,1669,1747,1889,1933,2027,2029,2039,2237, %U A106894 2377,2411,2659,2683,2693,2729,2857,2909,3011,3167,3181,3299,3343 %N A106894 Primes of the form 3x^2+xy+4y^2, with x and y nonnegative. %C A106894 Discriminant=-47. %H A106894 Vincenzo Librandi and Ray Chandler, <a href="/A106894/b106894.txt">Table of n, a(n) for n = 1..10000</a> [First 1000 terms from Vincenzo Librandi] %H A106894 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 A106894 QuadPrimes2[3, 1, 4, 10000] (* see A106856 *) %K A106894 nonn,easy %O A106894 1,1 %A A106894 _T. D. Noe_, May 09 2005