A089405 - OEIS

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A089405

Number of cycles in range [A014137(n-1)..A014138(n-1)] of permutation A073288/A073289.

1, 1, 2, 4, 9, 20, 47, 112, 279, 712, 1868, 5020, 13792, 38630, 110105, 318756, 935817, 2782424, 8368484, 25434314, 78047606 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`0,3`
	COMMENTS	`The number of orbits to which the corresponding automorphism(s) partitions the set of A000108(n) binary trees with n internal nodes.`
	LINKS	`Table of n, a(n) for n=0..20.` `A. Karttunen, C-program for computing the initial terms of this sequence`
	CROSSREFS	`Sequence in context: A036620 A036721 A014267 * A091500 A052329 A199883` `Adjacent sequences: A089402 A089403 A089404 * A089406 A089407 A089408`
	KEYWORD	`nonn`
	AUTHOR	`Antti Karttunen, Nov 29 2003`
	STATUS	`approved`

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Last modified May 19 22:35 EDT 2013. Contains 225436 sequences.