A090827 - OEIS

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A090827

Number of cycles in range [A014137(n-1)..A014138(n-1)] of permutation A089869/A089870.

1, 1, 2, 5, 13, 34, 91, 245, 659, 1786, 4846, 13182, 35962, 98418, 270121, 743533, 2052073, 5678238, 15750382, 43793198, 122042214 (list; graph; refs; listen; history; 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	`A. Karttunen, C-program for computing the initial terms of this sequence`
	CROSSREFS	`Sequence in context: A006801 A114173 A023425 * A109192 A192313 A193039` `Adjacent sequences: A090824 A090825 A090826 * A090828 A090829 A090830`
	KEYWORD	`nonn`
	AUTHOR	`Antti Karttunen (His_Firstname.His_Surname(AT)iki.fi), Dec 20 2003`

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Last modified February 13 19:04 EST 2012. Contains 205535 sequences.