%I #4 Jul 12 2020 10:49:01
%S 1,1,2,5,11,31,75,232,607
%N Number of connected hook length posets, with n elements.
%H Cheryl A. Gann and Robert A. Proctor, <a href="http://lists-of-posets.math.unc.edu/defcnt.html#pstcnts">Poset Counts</a>
%H Robert A. Proctor, <a href="http://www.math.unc.edu/Faculty/rap/Hook.html">Definition of hook length poset</a>
%Y Cf. A000112, A124480, A124482, A124483.
%K more,nonn
%O 1,3
%A _Franklin T. Adams-Watters_, Nov 03 2006