%I #4 Mar 30 2012 18:56:09
%S 1,3,18,65,346,1288,6818,25518,136152,510532,2745347,10309234,
%T 55784794,209766714,1140670242,4294635438,23445204441
%N T(2n,n-2), T given by A026568.
%K nonn
%O 2,2
%A _Clark Kimberling_
