A014169 - OEIS

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A014169

Apply partial sum operator thrice to binary rooted tree numbers.

1, 4, 11, 25, 51, 98, 182, 331, 595, 1063, 1894, 3373, 6010, 10719, 19139, 34208, 61195, 109551, 196228, 351636, 630330, 1130181, 2026775, 3635128, 6520408, 11696591, 20982875, 37643135, 67533204 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,2`
	LINKS	`Index entries for sequences related to rooted trees`
	FORMULA	`G.f.: (B(x)-x)/x(1-x)^3 where B(x) is g.f. of A002572.`
	CROSSREFS	`Cf. A002572.` `Sequence in context: A136395 A014160 A014162 * A113684 A014173 A156127` `Adjacent sequences: A014166 A014167 A014168 * A014170 A014171 A014172`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`

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Last modified February 17 10:05 EST 2012. Contains 206009 sequences.