%I A055854
%S A055854 0,1,9,53,253,1059,4043,14407,48639,157184,489872,1480608,4358752,
%T A055854 12541184,35364864,97960192,267050240,717619200,1903452160,4989337600,
%U A055854 12937052160,33212530688,84484882432,213090238464,533236219904
%N A055854 Convolution of A055853 with A011782.
%C A055854 Ninth column of triangle A055587. T(n,7) of array T as in A049600.
%F A055854 a(n)= T(n, 7)= A055587(n+7, 8); G.f.: x*((1-x)^7)/(1-2*x)^8.
%Y A055854 Cf. A049600, A055587, A055853, A011782.
%Y A055854 Sequence in context: A094793 A036425 A126085 this_sequence A122588 A005025 
               A038761
%Y A055854 Adjacent sequences: A055851 A055852 A055853 this_sequence A055855 A055856 
               A055857
%K A055854 nonn,easy
%O A055854 0,3
%A A055854 Wolfdieter Lang (wolfdieter.lang(AT)physik.uni-karlsruhe.de) May 30 2000