%I #5 Jun 23 2018 17:38:59
%S 1,0,0,0,0,1,1,1,1,2,3,3,5,6,8,10,13,18,23,30,39,51,67,87,114,149,195,
%T 255,334,438,574,753,988,1298,1706,2242,2948,3877,5102,6716,8842,
%U 11646,15343,20220,26654,35144,46349,61142,80673,106467,140537,185545,245015
%N a(n) = floor(binomial(2*n,n)/3^n).
%K nonn
%O 0,10
%A _Clark Kimberling_
%E More terms from _Alois P. Heinz_, Jun 23 2018
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