%I A063573
%S A063573 1,2,10,170,33490,1133870930,1285739648704587610,1653126447166808568966775665261637370
%N A063573 First differences of A002065.
%C A063573 Number of trees of height n generated by unary and binary composition. 
               - Claude Lenormand (claude.lenormand(AT)free.fr), Sep 05 2001
%Y A063573 Sequence in context: A126451 A132341 A069994 this_sequence A086675 A057119 
               A037267
%Y A063573 Adjacent sequences: A063570 A063571 A063572 this_sequence A063574 A063575 
               A063576
%K A063573 nonn
%O A063573 0,2
%A A063573 N. J. A. Sloane (njas(AT)research.att.com), Sep 06 2001