A120259 - OEIS

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A120259

Row sums of number triangle A120258.

1, 2, 4, 11, 46, 302, 3109, 49345, 1209058, 45574112, 2636237374, 234854695297, 32081882854399, 6733481882732516, 2172532761103119601, 1074257501384373622001, 816914977299535380309346 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,2`
	FORMULA	`a(n)=sum{k=0..n, Product{j=0..k-1, C(2n-2k+j, n-k)/C(n-k+j, j)}}`
	CROSSREFS	`Sequence in context: A140838 A114954 A134019 * A174632 A091240 A068488` `Adjacent sequences: A120256 A120257 A120258 * A120260 A120261 A120262`
	KEYWORD	`easy,nonn`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), Jun 13 2006`

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Last modified February 16 16:45 EST 2012. Contains 205938 sequences.