%I #2 Mar 30 2012 18:37:08
%S 1,4,24,186,1736,18754,228658,3092316,45802294,735881882,12727541778,
%T 235515880084,4638914346322,96840935881898,2134717733185118,
%U 49529467079270060,1206148832249659798,30751284267472226682
%N Column 3 of triangle A135902.
%Y Cf. A135902; A135903, A135904.
%K nonn
%O 0,2
%A _Paul D. Hanna_, Dec 18 2007