id:A036628 - OEIS Search Results

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Number of 4-ary rooted trees with n nodes and height exactly 4.

+0
1

0, 0, 0, 0, 1, 3, 8, 18, 35, 65, 114, 194, 316, 510, 793, 1223, 1839, 2737, 3984, 5746, 8123, 11363, 15615, 21212, 28336, 37412, 48597, 62368, 78810, 98359, 120910, 146797, 175601, 207443, 241515, 277666, 314674, 352152, 388503 (list; graph; listen)

	OFFSET	`0,6`
	LINKS	`Index entries for sequences related to rooted 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	`Sequence in context: A083726 A081489 A055278 this_sequence A004035 A000234 A136376` `Adjacent sequences: A036625 A036626 A036627 this_sequence A036629 A036630 A036631`
	KEYWORD	`nonn,fini`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`

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Last modified December 18 21:37 EST 2009. Contains 171024 sequences.

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