id:A115969 - OEIS Search Results

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Expansion of 1/(2*sqrt(1-6x+x^2)-1).

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1, 6, 44, 336, 2600, 20232, 157864, 1233528, 9646328, 75470472, 590627208, 4623006744, 36189493080, 283315538664, 2218082213544, 17365909807416, 135964585370552 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`G.f.: A(x)^2/(2*A(x)-A(x)^2) where A(x) is the g.f. of the central Delannoy numbers A001850.`
	CROSSREFS	`Sequence in context: A091163 A102591 A114935 this_sequence A082412 A108452 A005591` `Adjacent sequences: A115966 A115967 A115968 this_sequence A115970 A115971 A115972`
	KEYWORD	`easy,nonn`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), Feb 03 2006`

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Last modified December 11 12:57 EST 2009. Contains 170656 sequences.

AT&T Labs Research