id:A036621 - OEIS Search Results

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

+0
1

1, 1, 1, 2, 4, 8, 15, 29, 52, 95, 168, 297, 513, 887, 1504, 2543, 4247, 7054, 11596, 18964, 30732, 49529, 79210, 125944, 198861, 312224, 487021, 755435, 1164641, 1785574, 2721591, 4125745, 6219019, 9324141, 13902921, 20620505, 30419742 (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: A036618 A036619 A036620 this_sequence A036622 A036623 A036624` `Sequence in context: A049864 A118870 A088532 this_sequence A001383 A108564 A066369`
	KEYWORD	`nonn,fini`
	AUTHOR	`njas`

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Last modified October 13 02:37 EDT 2008. Contains 145008 sequences.

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