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 A106874 #17 Aug 05 2014 14:16:29 %S A106874 47,67,131,149,173,227,293,349,379,431,521,577,607,617,653,811,839, %T A106874 853,857,919,937,971,1031,1063,1187,1213,1237,1259,1303,1327,1451, %U A106874 1493,1559,1583,1619,1663,1721,1723,1741,1879,1931,1973,2003,2017 %N A106874 Primes of the form x^2+xy+8y^2, with x and y nonnegative. %C A106874 Discriminant=-31. %H A106874 Vincenzo Librandi and Ray Chandler, <a href="/A106874/b106874.txt">Table of n, a(n) for n = 1..10000</a> [First 1000 terms from Vincenzo Librandi] %H A106874 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 A106874 QuadPrimes2[1, 1, 8, 10000] (* see A106856 *) %K A106874 nonn,easy %O A106874 1,1 %A A106874 _T. D. Noe_, May 09 2005