%I #24 Nov 23 2020 08:33:04
%S 1,1,2,3,8,30,144,840,5760,45360,403200,570240,43545600,518918400,
%T 6706022400,93405312000,126804787200,22230464256000,53801459712000,
%U 6758061133824000,128047474114560000,2554547108585472000,53523844179886080000
%N Denominator of cumulative weight of certain D-forests on n nodes.
%H Bernhard Gittenberger, Emma Yu Jin, Michael Wallner, <a href="https://arxiv.org/abs/1707.02144">On the shape of random PĆ³lya structures</a>, arXiv|1707.02144 [math.CO], 2017; Discrete Math., 341 (2018), 896-911.
%e 1, 0, 1/2, 1/3, 7/8, 11/30, 281/144, 449/840, ...
%Y Cf. A301736.
%K nonn,frac
%O 0,3
%A _N. J. A. Sloane_, Apr 02 2018
%E a(8)-a(22) from _Andrew Howroyd_, Jun 21 2018