A036610 - OEIS

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A036610

Number of 4-ary rooted trees with n nodes and height at most 5.

1, 1, 1, 2, 4, 9, 18, 39, 80, 165, 331, 664, 1307, 2569, 4983, 9624, 18416, 35060, 66218, 124411, 232138, 430783, 794431, 1457063, 2656709, 4817940, 8688296, 15584381, 27802598, 49340196, 87100640, 152968396, 267264610, 464600889 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,4`
	LINKS	`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.` `Index entries for sequences related to rooted trees`
	CROSSREFS	`Sequence in context: A018097 A079580 A018000 * A193201 A038044 A189911` `Adjacent sequences: A036607 A036608 A036609 * A036611 A036612 A036613`
	KEYWORD	`nonn,fini`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`

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Last modified February 17 08:34 EST 2012. Contains 205998 sequences.