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%I #7 Oct 23 2019 22:08:54
%S 1,2,7,24,81,274,923,3087,10232,33587,109190,351730,1123465,3561045,
%T 11210036,35073033,109137568,337969627,1042129366,3201226811,
%U 9800475386,29914121676,91063951213,276556071836,838101477953
%N a(n) = A027113(n, 2n-8).
%K nonn
%O 4,2
%A _Clark Kimberling_