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%I #5 Nov 28 2014 14:12:01
%S 2,3,6,17,50,154,490,1608,5402,18475,64130,225346,800046,2865471,
%T 10341168,37567524,137270954,504174183,1860277042,6892326441,
%U 25631327354,95640861987,357975249026,1343650153462,5056424257510,19073789728773,72108867616596
%N a(n) = [ C(2n,n)/n ].
%t Table[Floor[Binomial[2n,n]/n],{n,40}] (* _Harvey P. Dale_, Nov 28 2014 *)
%K nonn
%O 1,1
%A _Clark Kimberling_