id:A098580 - OEIS Search Results

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Expansion of (sqrt(1-8x)-4x)/sqrt(1-8x).

+0
1

1, -4, -16, -96, -640, -4480, -32256, -236544, -1757184, -13178880, -99573760, -756760576, -5778898944, -44304891904, -340806860800, -2629081497600, -20331563581440, -157569617756160, -1223481737871360, -9515969072332800, -74124390668697600 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`G.f.: 1-4x/sqrt(1-8x); a(0)=1, a(n)=-2^(n+1)(2(n-1))!/(n-1)!^2.`
	CROSSREFS	`Cf. A059304.` `Sequence in context: A050913 A096243 A131928 this_sequence A027745 A032184 A111976` `Adjacent sequences: A098577 A098578 A098579 this_sequence A098581 A098582 A098583`
	KEYWORD	`easy,sign`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), Sep 16 2004`

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Last modified July 24 12:00 EDT 2008. Contains 142294 sequences.

AT&T Labs Research