A001137 - OEIS

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A001137

Number of black-rooted red-black trees with n internal nodes.

1, 2, 2, 4, 8, 16, 33, 56, 90, 164, 330, 688, 1440, 3008, 6291, 13168, 27604, 57896, 120730, 248312 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,2`
	LINKS	`F. Ruskey, Information on Red-Black Trees` `Eric Weisstein's World of Mathematics, Link to a section of The World of Mathematics.` `Index entries for sequences related to rooted trees`
	CROSSREFS	`Sequence in context: A171648 A189914 A090129 * A123593 A122748 A108774` `Adjacent sequences: A001134 A001135 A001136 * A001138 A001139 A001140`
	KEYWORD	`nonn`
	AUTHOR	`Frank Ruskey (ruskey(AT)cs.uvic.ca)`

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Last modified February 15 18:19 EST 2012. Contains 205835 sequences.