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%I #8 Oct 26 2019 15:39:47
%S 1,3,10,27,76,195,519,1299,3364,8311,21191,51981,131273,320715,804845,
%T 1961823,4901782,11932489,29719325,72291325,179610365,436699813,
%U 1082870377,2632116551,6516122403,15835522783,39147779575
%N a(n) = Sum_{k=0..n} (k+1) * A026780(n, k).
%K nonn
%O 0,2
%A _Clark Kimberling_