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%I #8 Oct 20 2019 19:54:03
%S 1,3,8,25,60,147,336,882,1960,4631,10104,25207,54292,125895,268576,
%T 653191,1383228,3172981,6679960,15996204,33515856,76350225,159339600,
%U 377580850,785368168,1780545051,3692982328,8684805392,17968562880
%N a(n) = Sum_{k=0..n} (k+1) * A026659(n,k).
%K nonn
%O 0,2
%A _Clark Kimberling_