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Number of cycles in range [A014137(n-1)..A014138(n-1)] of permutation A082335/A082336.
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%I #6 Mar 31 2012 14:02:17

%S 1,1,1,2,3,9,22,71,217,729,2438,8440,29414,104138,371516,1337649,

%T 4847637,17680265,64823110,238824212,883634026

%N Number of cycles in range [A014137(n-1)..A014138(n-1)] of permutation A082335/A082336.

%C The number of orbits to which the corresponding automorphism(s) partitions the set of A000108(n) binary trees with n internal nodes.

%H A. Karttunen, <a href="/A089408/a089408.c.txt">C-program for computing the initial terms of this sequence</a>

%K nonn

%O 0,4

%A _Antti Karttunen_, Nov 29 2003