id:A036611 - OEIS Search Results

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

+0
1

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; listen)

	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	`Adjacent sequences: A036608 A036609 A036610 this_sequence A036612 A036613 A036614` `Sequence in context: A026776 A117160 A084083 this_sequence A036612 A036613 A036614`
	KEYWORD	`nonn,fini`
	AUTHOR	`njas`

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Last modified May 16 23:01 EDT 2008. Contains 139884 sequences.

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