id:A097801 - OEIS Search Results

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(2*n)!/(n!*2^(n-1)).

+0
4

2, 2, 6, 30, 210, 1890, 20790, 270270, 4054050, 68918850, 1309458150, 27498621150, 632468286450, 15811707161250, 426916093353750, 12380566707258750, 383797567925021250, 12665319741525701250, 443286190953399543750, 16401589065275783118750, 639661973545755541631250 (list; graph; listen)

	OFFSET	`0,1`
	REFERENCES	`Right-hand edge of triangle in A097749.`
	CROSSREFS	`Sequence in context: A108800 A058250 A067644 this_sequence A052584 A094303 A117394` `Adjacent sequences: A097798 A097799 A097800 this_sequence A097802 A097803 A097804`
	KEYWORD	`nonn`
	AUTHOR	`njas, Sep 21 2004`

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.

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