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%I #3 Mar 31 2012 13:20:07
%S 1,5,36,328,3440,39408,478912,6068480,79315200,1061628160,14480086016,
%T 200540018688,2812618092544,39867889037312,570237130752000,
%U 8219880968028160,119293333282291712,1741605394647416832
%N Second column of triangle A067304.
%F a(n)= A067304(n+1, 1) = A067297(n+1) - A064340(n+1), n>=0.
%F G.f.: 4*(3+c(4*x))*(c(4*x)^3)/(1+c(4*x))^4 with c(x) g.f. of A000108 (Catalan).
%K nonn,easy
%O 0,2
%A _Wolfdieter Lang_, Feb 05 2002
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