A089404 - OEIS

The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

Thanks to everyone who made a donation during our annual appeal!
To see the list of donors, or make a donation, see the OEIS Foundation home page.

A089404

Number of cycles in range [A014137(n-1)..A014138(n-1)] of permutation A073286/A073287.

1, 1, 2, 4, 10, 26, 74, 222, 698, 2264, 7536, 25600, 88406, 309440, 1095354, 3914340, 14102324, 51165004, 186774368, 685495334, 2527957006 (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: A206464 A089429 A049143 * A006123 A006251 A049401` `Adjacent sequences: A089401 A089402 A089403 * A089405 A089406 A089407`
	KEYWORD	`nonn`
	AUTHOR	`Antti Karttunen, Nov 29 2003`
	STATUS	`approved`

License Agreements, Terms of Use, Privacy Policy. .

Last modified January 18 06:20 EST 2021. Contains 340250 sequences. (Running on oeis4.)