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 A026088 #3 Mar 30 2012 18:56:04 %S A026088 1,3,8,52,294,1691,9736,56277,326430,1899530,11085360,64857925, %T A026088 380331474,2234804775,13155328400,77565394650,458003596050, %U A026088 2707970743326,16030265384752,94997726453172 %N A026088 a(n) = T(2n-1,n), where T is the array defined in A026082. %K A026088 nonn %O A026088 1,2 %A A026088 _Clark Kimberling_