id:A089417 - OEIS Search Results

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

+0
2

1, 1, 1, 2, 7, 6, 10, 20, 37, 70, 130, 272, 480, 954, 1750, 3462, 6481, 12922, 24372, 48702, 92490 (list; graph; listen)

	OFFSET	`0,4`
	COMMENT	`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: A103557 A138283 A117968 this_sequence A082017 A072985 A082187` `Adjacent sequences: A089414 A089415 A089416 this_sequence 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 September 6 16:04 EDT 2008. Contains 143483 sequences.