A036642 - OEIS

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A036642

Number of 6-ary rooted trees with n nodes and height exactly 4.

0, 0, 0, 0, 1, 3, 8, 18, 38, 76, 144, 266, 476, 841, 1452, 2482, 4179, 6978, 11515, 18876, 30642, 49435, 79116, 125850, 198771, 312136, 486940, 755359, 1164573, 1785513, 2721539, 4125699, 6218982, 9324110, 13902897, 20620486, 30419728 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,6`
	LINKS	`Index entries for sequences related to rooted trees` `E. M. Rains and N. J. A. Sloane, On Cayley's Enumeration of Alkanes (or 4-Valent Trees), J. Integer Sequences, Vol. 2 (1999), Article 99.1.1.`
	CROSSREFS	`Sequence in context: A036635 A000713 A078409 * A000235 A006478 A104187` `Adjacent sequences: A036639 A036640 A036641 * A036643 A036644 A036645`
	KEYWORD	`nonn,fini`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`

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