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 A141730 #3 Aug 24 2012 10:50:01 %S A141730 0,1,3,4,3,7,8,7,9,11,13,13,16,15,17,16,15,21,21,23,25,27,27,31,32,25, %T A141730 33,28,33,35,36,31,33,37,39,35,45,43,41,45,55,51,57,53,59,55,57,53,64, %U A141730 53,59,62,67,63,68,61,71,59,73,61,76,63,73,64,63,73,71,73,85,83,77,79 %N A141730 Numbers of 0's in the rows of triangle A141727. %Y A141730 Cf. A141727 - A141729, A141731 - A141746. %K A141730 easy,nonn %O A141730 1,3 %A A141730 _Paolo P. Lava_ and _Giorgio Balzarotti_, Jul 02 2008