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 A160052 #3 Sep 08 2013 13:31:40 %S A160052 1,1,3,0,1,3,1,3,5,7,0,2,4,1,3,0,2,1,3,5,7,0,1,3,2,4,5,7,1,3,5,7,9,11, %T A160052 13,15,0,2,4,6,8,10,12,1,3,0,2,4,6,8,10,1,3,5,7,0,2,4,6,8,1,3,10,12,5, %U A160052 7,0,2,4,6,1,3,5,7,9,11,13,15,0,2,4,1,3,6,8,10,12,14,16,5,7 %N A160052 Triangle : Lodumo_2 applied to each row of triangle in A039599 . %C A160052 Row sums: A160020. %e A160052 Triangle begins : 1 ; 1,3 ; 0,1,3 ; 1,3,5,7 ; 0,2,4,1,3 ; 0,2,1,3,5,7, %K A160052 easy,nonn,tabl %O A160052 0,3 %A A160052 _Philippe Deléham_, Apr 30 2009