id:A014169 - OEIS Search Results

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Apply partial sum operator thrice to binary rooted tree numbers.

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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; listen)

	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 this_sequence A113684 A014173 A079467` `Adjacent sequences: A014166 A014167 A014168 this_sequence A014170 A014171 A014172`
	KEYWORD	`nonn`
	AUTHOR	`njas`

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Last modified July 26 23:19 EDT 2008. Contains 142293 sequences.

AT&T Labs Research