%I #7 Oct 23 2019 17:32:56
%S 1,1,5,17,57,193,650,2173,7199,23619,76746,247103,788934,2499707,
%T 7866233,24603551,76538239,236960031,730506849,2243545795,6867375720,
%U 20958167581,63791696431,193708118293,586967142587,1775245686845
%N a(n) = A027082(n, 2n-8).
%K nonn
%O 4,3
%A _Clark Kimberling_