A034865 - OEIS

This site is supported by donations to The OEIS Foundation.

A034865

n!*(n-4)/2.

0, 60, 720, 7560, 80640, 907200, 10886400, 139708800, 1916006400, 28021593600, 435891456000, 7192209024000, 125536739328000, 2311968282624000, 44816615940096000, 912338253066240000 (list; graph; refs; listen; history; internal format)

	OFFSET	`4,2`
	REFERENCES	`J. Riordan, Enumeration of trees by height and diameter, IBM J. Res. Dev. 4 (1960), 473-478.`
	LINKS	`Index entries for sequences related to factorial numbers`
	CROSSREFS	`Equals 60 * A062199(n-5).` `Sequence in context: A088945 A136008 A000555 * A138409 A024016 A112042` `Adjacent sequences: A034862 A034863 A034864 * A034866 A034867 A034868`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`

Content is available under The OEIS End-User License Agreement .

Last modified February 16 10:39 EST 2012. Contains 205904 sequences.