id:A036649 - OEIS Search Results

Search: id:A036649

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Number of bicentered 5-valent trees with n nodes.

+0
1

0, 0, 1, 0, 1, 1, 3, 4, 10, 18, 46, 95, 231, 524, 1287, 3095, 7713, 19125, 48258, 122026, 311935, 801061, 2072629, 5387753, 14081981, 36959506, 97419796, 257724555, 684254908, 1822560590, 4869517848, 13047469920, 35053803135 (list; graph; listen)

	OFFSET	`0,7`
	LINKS	`Index entries for sequences related to trees` `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.`
	CROSSREFS	`Adjacent sequences: A036646 A036647 A036648 this_sequence A036650 A036651 A036652` `Sequence in context: A034775 A006490 A139797 this_sequence A109887 A103038 A143108`
	KEYWORD	`nonn`
	AUTHOR	`njas`

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

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