%I #11 Nov 20 2017 03:34:30
%S 1,1,34,5446,2405116,2261938588,3887833883752
%N Number of N(3)-good labeled Schroeder trees with 3n+1 leaves.
%H John Engbers, David Galvin, Clifford Smyth, <a href="https://arxiv.org/abs/1610.05803">Restricted Stirling and Lah numbers and their inverses</a>, arXiv:1610.05803 [math.CO], 2016.
%K nonn,more
%O 0,3
%A _N. J. A. Sloane_, Sep 22 2017