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 A176557 #7 Mar 30 2012 18:40:08 %S A176557 7,23,43,67,127,163,347,463,743,823,907,1087,1283,1607,1723,2503,2647, %T A176557 3767,3943,5923,6143,6367,6827,7547,8563,9643,9923,11083,11383,13267, %U A176557 14947,15647,16363,17467,18223,19387,20183,21407,24847,25747,26203 %N A176557 Primes of the form 7*x^2 - 5*y^2, where x and y are successive natural numbers. %C A176557 a(n) is congruent 3 mod 4. %C A176557 Primes of the form 2x^2+10x-5, x>=1. [From _R. J. Mathar_ and _Vincenzo Librandi_, Apr 21 2010] %Y A176557 Cf. A176470 %K A176557 nonn %O A176557 1,1 %A A176557 _Giovanni Teofilatto_, Apr 20 2010 %E A176557 More terms from _R. J. Mathar_ and _Vincenzo Librandi_, Apr 21 2010