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 A026092 #3 Mar 30 2012 18:56:04 %S A026092 1,1,9,45,248,1377,7756,44096,252570,1455166,8424011,48960606, %T A026092 285512823,1669721225,9788890230,57511916805,338536358979, %U A026092 1996103321754,11787262391390,69699393574522 %N A026092 a(n) = T(2n,n-1), where T is the array defined in A026082. %K A026092 nonn %O A026092 1,3 %A A026092 _Clark Kimberling_