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