%I A076026
%S A076026 1,1,6,37,230,1434,8952,55917,349374,2183230,13643972,85270626,532926716,
%T A076026 3330739972,20816939100,130105200765,813155081070,5082210417270,31763782696740,
%U A076026 198523522444950,1240771573465140,7754820693127020,48467623215477120,302922622226091090
%N A076026 G.f.: (1-4*x*C)/(1-5*x*C) where C = (1/2-1/2*(1-4*x)^(1/2))/x = g.f. 
               for Catalan numbers A000108.
%F A076026 a(n+1)=Sum_{k, 0<=k<=n}A039598(n,k)*4^k . - Philippe DELEHAM (kolotoko(AT)wanadoo.fr), 
               Mar 21 2007
%F A076026 a(n) = Sum_{k, 0<=k<=n}A039599(n,k)*A015521(k), for n>=1 . - Philippe 
               DELEHAM (kolotoko(AT)wanadoo.fr), Nov 22 2007
%Y A076026 Cf. A000108, A001700, A049027, A076025.
%Y A076026 Sequence in context: A022035 A005668 A018904 this_sequence A161734 A081570 
               A122898
%Y A076026 Adjacent sequences: A076023 A076024 A076025 this_sequence A076027 A076028 
               A076029
%K A076026 nonn
%O A076026 0,3
%A A076026 N. J. A. Sloane (njas(AT)research.att.com), Oct 29 2002