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 A106875 #18 Aug 05 2014 14:16:29 %S A106875 3,19,59,107,163,211,251,347,419,499,571,587,619,659,883,907,947,1051, %T A106875 1171,1259,1283,1459,1483,1499,1579,1627,1747,1907,1931,1987,2003, %U A106875 2083,2179,2203,2347,2411,2459,2467,2531,2539,2707,2803,2819,2963 %N A106875 Primes of the form 3x^2+2xy+3y^2, with x and y nonnegative. %C A106875 Discriminant=-32. %H A106875 Vincenzo Librandi and Ray Chandler, <a href="/A106875/b106875.txt">Table of n, a(n) for n = 1..10000</a> [First 1000 terms from Vincenzo Librandi] %H A106875 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 A106875 QuadPrimes2[3, 2, 3, 10000] (* see A106856 *) %Y A106875 Cf. A243177, A007520. %K A106875 nonn,easy %O A106875 1,1 %A A106875 _T. D. Noe_, May 09 2005