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%I #4 Mar 31 2012 13:20:07
%S 5,19,66,227,785,2739,9646,34268,122706,442510,1605956,5861481,
%T 21502585,79243395,293246550,1089264360,4059928950,15179606010,
%U 56917649820,213982542150,806429435994,3046017513198
%N Fourth column of triangle A067323.
%C Also fourth diagonal of triangle A028364.
%F a(n)= A067323(n+3, 3)= C(n+4)-(C(n+3)+C(n+2)+2*C(n+1)), C(n) := A000108(n) (Catalan).
%F G.f.: (c(x)^3)*(2+2*c(x)+c(x)^2), with c(x) g.f. of A000108 (Catalan).
%Y Cf. A067324 (third column).
%K nonn,easy
%O 0,1
%A _Wolfdieter Lang_, Feb 05 2002
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