%I #11 Oct 07 2019 11:07:23
%S 0,1,1,8,30,264,1920,20880,226800,3064320,43908480,722131200,
%T 12773376000,249559833600,5236924492800,118911189196800,
%U 2883421981440000,74715282690048000,2054450584682496000,59855791774851072000,1839882143683584000000
%N Number of labeled octopi with n nodes such that each tentacle has an odd number of nodes.
%F For n>=1; (n-1)!*( A000032(n) + (-1)^(n+1) -1 ).
%F E.g.f.: log(1/(1 - A(x)) where A(x) = x/(1-x^2).
%t nn=20;f[x_]:=x/(1-x^2);Range[0,nn]!CoefficientList[Series[Log[1/(1-f[x])],{x,0,nn}],x]
%Y Cf. A029767.
%K nonn
%O 0,4
%A _Geoffrey Critzer_, Sep 01 2013
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