A089417 - OEIS

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A089417

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 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,4`
	COMMENTS	`The number of orbits to which the corresponding automorphism(s) partitions the set of A000108(n) binary trees with n internal nodes.` `Is the non-monotone notch from a(4)=7 to a(5)=6 the only one?`
	LINKS	`A. Karttunen, C-program for computing the initial terms of this sequence`
	CROSSREFS	`Cf. A089411.` `Sequence in context: A138283 A117968 A154200 * A168205 A082017 A072985` `Adjacent sequences: A089414 A089415 A089416 * A089418 A089419 A089420`
	KEYWORD	`nonn`
	AUTHOR	`Antti Karttunen (His_Firstname.His_Surname(AT)iki.fi), Nov 29 2003, Proposed by Wouter Meeussen (wouter.meeussen(AT)pandora.be), Spring 2003.`

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Last modified February 17 21:13 EST 2012. Contains 206085 sequences.