A089421 - OEIS

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A089421

Number of cycles in range [A014137(n-1)..A014138(n-1)] of permutation A082335/A082336.

1, 1, 1, 2, 3, 9, 22, 71, 217, 729, 2438, 8440, 29414, 104138, 371516, 1337649, 4847637, 17680265, 64823110, 238824212, 883634026 (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.`
	LINKS	`A. Karttunen, C-program for computing the initial terms of this sequence`
	CROSSREFS	`Sequence in context: A111360 A111238 A057832 * A151825 A111240 A056198` `Adjacent sequences: A089418 A089419 A089420 * A089422 A089423 A089424`
	KEYWORD	`nonn`
	AUTHOR	`Antti Karttunen (His_Firstname.His_Surname(AT)iki.fi), Nov 29 2003`

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Last modified February 15 16:56 EST 2012. Contains 205825 sequences.