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 A106906 #21 Aug 05 2014 14:16:29
%S A106906 2,7,11,19,31,47,59,67,71,83,151,163,167,223,227,239,271,307,331,359,
%T A106906 379,383,431,463,479,487,499,587,619,631,643,683,691,739,743,787,811,
%U A106906 827,839,863,947,967,983,1019,1051,1087,1103,1123,1151,1163,1259,1279
%N A106906 Primes of the form 2x^2-2xy+7y^2, with x and y nonnegative.
%C A106906 Discriminant=-52.
%H A106906 Vincenzo Librandi and Ray Chandler, <a href="/A106906/b106906.txt">Table of n, a(n) for n = 1..10000</a> [First 1000 terms from Vincenzo Librandi]
%H A106906 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)
%F A106906 The primes are congruent to {2, 7, 11, 15, 19, 31, 47} (mod 52). - _T. D. Noe_, May 02 2008
%t A106906 QuadPrimes2[2, -2, 7, 10000] (* see A106856 *)
%Y A106906 Cf. A139827.
%K A106906 nonn,easy
%O A106906 1,1
%A A106906 _T. D. Noe_, May 09 2005