A036611 - OEIS

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A036611

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

1, 1, 1, 2, 4, 9, 19, 44, 99, 226, 506, 1133, 2506, 5530, 12104, 26408, 57296, 123892, 266712, 572308, 1223488, 2607429, 5538518, 11729577, 24766121, 52143714, 109475193, 229218555, 478646764, 996885485, 2070875492, 4291068343 (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: A026776 A117160 A084083 * A036612 A036613 A036614` `Adjacent sequences: A036608 A036609 A036610 * A036612 A036613 A036614`
	KEYWORD	`nonn,fini`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`

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Last modified February 17 23:38 EST 2012. Contains 206085 sequences.