A036650 - OEIS

This site is supported by donations to The OEIS Foundation.

A036650

Number of 5-valent trees with n nodes.

0, 1, 1, 1, 2, 3, 6, 10, 21, 42, 94, 204, 473, 1098, 2633, 6353, 15641, 38789, 97416, 246410, 628726, 1614292, 4171955, 10839366, 28308678, 74266477, 195667533, 517504253, 1373640355, 3658205088, 9772510063, 26181295237, 70330621171 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,5`
	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 trees`
	CROSSREFS	`Sequence in context: A063687 A002988 A138347 * A049889 A014270 A127076` `Adjacent sequences: A036647 A036648 A036649 * A036651 A036652 A036653`
	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 15 05:45 EST 2012. Contains 205694 sequences.