A036631 - OEIS

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A036631

Number of 4-ary rooted trees with n nodes and height exactly 7.

0, 0, 0, 0, 0, 0, 0, 1, 6, 26, 94, 302, 900, 2546, 6931, 18341, 47474, 120750, 302741, 750050, 1839421, 4471759, 10787891, 25849612, 61564934, 145828769, 343713516, 806462038, 1884353462, 4386038531, 10172642984, 23515472829, 54190799650 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,9`
	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: A032169 A032196 A011780 * A036638 A036645 A000393` `Adjacent sequences: A036628 A036629 A036630 * A036632 A036633 A036634`
	KEYWORD	`nonn,fini`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`

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Last modified February 15 11:21 EST 2012. Contains 205777 sequences.