%I #9 Feb 27 2020 03:01:42
%S 1,2,9,43,242,1437,9058,59062,396207,2713848,18906784,133534659,
%T 953964640,6881027743,50044650836
%N Number of P_3 chair trees constructed from n chairs.
%H Isaac B. Michael and M. R. Sepanski, <a href="https://ajc.maths.uq.edu.au/pdf/66/ajc_v66_p192.pdf">Net regular signed trees</a>, Australasian Journal of Combinatorics, Volume 66(2) (2016), 192-204.
%K nonn,more
%O 0,2
%A _N. J. A. Sloane_, Sep 11 2017
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