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 A118803 #3 Mar 30 2012 18:36:57 %S A118803 1,1,5,33,237,1801,14197,114609,940445,7809273,65437541,552276577, %T A118803 4688278093,39991233641,342517093333,2943809545105,25377201555325, %U A118803 219341012215385,1900216743054021,16496109719061825,143469924189693229 %N A118803 Self-convolution square-root of A118802, which is the row squared sums of triangle A118801. %K A118803 nonn %O A118803 0,3 %A A118803 _Paul D. Hanna_, May 02 2006