%I #4 Mar 30 2012 18:56:04
%S 1,2,5,24,133,736,4135,23452,134043,770864,4455462,25859380,150615223,
%T 879876040,5153445895,30251941860,177938418225,1048452751872,
%U 6187400646130,36566048896896,216370786646054
%N T(2n,n), where T is the array defined in A024996.
%Y Bisection of A026078.
%K nonn
%O 0,2
%A _Clark Kimberling_