_Antti Karttunen (His_Firstname.His_Surname(AT)iki.fi), _, Nov 29 2003, Proposed by Wouter Meeussen, Spring 2003.

Antti Karttunen (His_Firstname.His_Surname(AT)iki.fi), Nov 29 2003, Proposed by _Wouter Meeussen (wouter.meeussen(AT)pandora.be), _, Spring 2003.

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

nonn,new

nonn

A. Karttunen, <a href="http://www.research.att.com/~njas/sequences/a089408.c.txt">C-program for computing the initial terms of this sequence</a>

nonn,new

nonn

A. Karttunen, <a href="http://www.research.att.com/~njas/sequences/gatomorfa089408.c.txt">C-program for computing the initial terms of this sequence</a>

nonn,new

nonn

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

nonn,new

nonn

Number of cycles in range [A014137(n-1)..A014138(n-1)] of permutation A082333/A082334.

1, 1, 1, 2, 7, 6, 10, 20, 37, 70, 130, 272, 480, 954, 1750, 3462, 6481, 12922, 24372, 48702, 92490

0,4

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

Is the non-monotone notch from a(4)=7 to a(5)=6 the only one?

A. Karttunen, <a href="http://www.research.att.com/~njas/sequences/gatomorf.c.txt">C-program for computing the initial terms of this sequence</a>

Cf. A089411.

nonn

Antti Karttunen (His_Firstname.His_Surname(AT)iki.fi), Nov 29 2003, Proposed by Wouter Meeussen (wouter.meeussen(AT)pandora.be), Spring 2003.

approved