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 A106879 #18 Aug 05 2014 14:16:29 %S A106879 3,5,13,47,73,103,167,227,283,293,353,367,383,433,467,503,563,577,593, %T A106879 677,727,797,853,857,997,1063,1097,1123,1153,1193,1217,1237,1433,1447, %U A106879 1543,1553,1567,1627,1657,1697,1823,1847,1867,1973,1987,1993,2063 %N A106879 Primes of the form 3x^2-xy+3y^2, with x and y nonnegative. %C A106879 Discriminant=-35. %H A106879 Vincenzo Librandi and Ray Chandler, <a href="/A106879/b106879.txt">Table of n, a(n) for n = 1..10000</a> [First 1000 terms from Vincenzo Librandi] %H A106879 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 A106879 QuadPrimes2[3, -1, 3, 10000] (* see A106856 *) %Y A106879 Cf. A106878. %K A106879 nonn,easy %O A106879 1,1 %A A106879 _T. D. Noe_, May 09 2005