A119552 - OEIS

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A119552

Binomial(binomial(2*n,n)*n,n).

%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