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%I #5 Dec 27 2023 22:38:05
%S 1,4,14,49,171,599,2112,7501,26832,96628,350132,1275850,4672841,
%T 17193765,63531060,235647765,877118340,3275236800,12266009940,
%U 46061604510,173404343190,654313080174,2474251490448,9374968922354
%N Expansion of (1+x^3*C^2)*C^4, where C = (1-(1-4*x)^(1/2))/(2*x) is g.f. for Catalan numbers, A000108.
%Y Cf. A000108.
%K nonn
%O 0,2
%A _N. J. A. Sloane_, Jun 06 2002
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