A007905 - OEIS

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A007905

Conflicts during insertions into exchange trees on n nodes.

0, 0, 1, 4, 30, 216, 1440, 11040, 112560, 1229760 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,4`
	LINKS	`Index entries for sequences related to trees`
	MAPLE	`a_n=a_{\lfloor \frac{n}{2}\rfloor}+a_{\lfloor \frac{n-1}{2}rfloor}+\frac{n-1}{n}.`
	CROSSREFS	`Sequence in context: A113450 A094567 A134093 * A084976 A000313 A082144` `Adjacent sequences: A007902 A007903 A007904 * A007906 A007907 A007908`
	KEYWORD	`nonn`
	AUTHOR	`Markus Nebel [ nebel(AT)sads.informatik.uni-frankfurt.de ]`

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Last modified February 17 00:09 EST 2012. Contains 205978 sequences.