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 A106880 #18 Aug 05 2014 14:16:29 %S A106880 11,29,71,109,149,151,179,191,211,239,281,331,359,379,389,401,421,449, %T A106880 491,499,541,571,599,631,641,659,701,739,751,809,821,911,919,991,1009, %U A106880 1019,1031,1051,1129,1171,1201,1229,1289,1381,1409,1429,1439,1451 %N A106880 Primes of the form x^2+xy+9y^2, with x and y nonnegative. %C A106880 Discriminant=-35. %H A106880 Vincenzo Librandi and Ray Chandler, <a href="/A106880/b106880.txt">Table of n, a(n) for n = 1..10000</a> [First 1000 terms from Vincenzo Librandi] %H A106880 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 A106880 QuadPrimes2[1, 1, 9, 10000] (* see A106856 *) %Y A106880 Cf. A106881. %K A106880 nonn,easy %O A106880 1,1 %A A106880 _T. D. Noe_, May 09 2005