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%I #2 Mar 31 2012 13:20:11
%S 1,7,55,472,4300,40861,400567,4021720,41147398,427470430,4497253054,
%T 47817544348,513029453530,5547155801065,60385754935495,
%U 661267785740080,7279524885630310,80512572260496610,894231158402339410
%N Row sums of triangle A116868 (called Y(1,3)).
%F a(n)=sum(A116868(n,m),m=1..n+1), n>=0.
%K nonn,easy
%O 0,2
%A _Wolfdieter Lang_, Mar 24 2006
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