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A089404 Number of cycles in range [A014137(n-1)..A014138(n-1)] of permutation A073286/A073287. +0
3
1, 1, 2, 4, 10, 26, 74, 222, 698, 2264, 7536, 25600, 88406, 309440, 1095354, 3914340, 14102324, 51165004, 186774368, 685495334, 2527957006 (list; graph; listen)
OFFSET

0,3

COMMENT

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

LINKS

A. Karttunen, C-program for computing the initial terms of this sequence

CROSSREFS

Sequence in context: A101488 A089429 A049143 this_sequence A006123 A006251 A049401

Adjacent sequences: A089401 A089402 A089403 this_sequence A089405 A089406 A089407

KEYWORD

nonn

AUTHOR

Antti Karttunen (His_Firstname.His_Surname(AT)iki.fi), Nov 29 2003

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.


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