%I #4 Mar 30 2012 18:56:53
%S 1,1,4,16,58,215,806,3051,11602,44307,169840,653204,2519314,9740350,
%T 37739300,146498531,569642584,2218322463,8650367796,33773500347,
%U 132008143328,516495270723,2022721237326,7928249018667,31100068617294
%N T(n,n-1), array T as in A047120.
%K nonn
%O 1,3
%A _Clark Kimberling_