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 A119552 #2 Oct 09 2013 02:24:26 %S A119552 1,2,66,34220,250654530,26255517781752,40219012695854521452, %T A119552 915602638690858051785326904,313119156483427472599890586326722370, %U A119552 1620758891081732168210880572699959520551984700 %N A119552 Binomial(binomial(2*n,n)*n,n). %p A119552 [seq (binomial(binomial(2*n,n)*n,n),n=0..10)]; %Y A119552 Cf. A005430. %K A119552 easy,nonn %O A119552 0,2 %A A119552 _Zerinvary Lajos_, May 30 2006