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%I #5 Nov 18 2018 09:04:19
%S 1,3,9,29,97,332,1155,4069,14482,51986,187986,684114,2503573,9207590,
%T 34013895,126153045,469574670,1753616370,6568462590,24670834470,
%U 92896573770,350612243904,1326145316766,5026028589314,19083966487332
%N Expansion of (1+x^3*C^4)*C^3, where C = (1-(1-4*x)^(1/2))/(2*x) is g.f. for Catalan numbers, A000108.
%t With[{c=(1-Sqrt[1-4x])/(2x)},CoefficientList[Series[(1+x^3 c^4)c^3,{x,0,30}],x]] (* _Harvey P. Dale_, Nov 18 2018 *)
%K nonn
%O 0,2
%A _N. J. A. Sloane_, Jun 06 2002
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