A083862 - OEIS

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A083862

Main diagonal of array A083857.

0, 1, 3, 10, 39, 171, 819, 4229, 23247, 135088, 824163, 5255361, 34876647, 240130801, 1710323667, 12572548582, 95183606559, 740843916471, 5918533467075, 48463830575837, 406239439253175, 3481899731310196 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,3`
	FORMULA	`a(n)=(((3+sqrt(4n+1))/2)^n-((3-sqrt(4n+1))/2)^n)/sqrt(4n+1)`
	CROSSREFS	`Cf. A083859, A083863.` `Sequence in context: A151072 A151073 A063688 * A205543 A137590 A124532` `Adjacent sequences: A083859 A083860 A083861 * A083863 A083864 A083865`
	KEYWORD	`easy,nonn`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), May 06 2003`

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Last modified February 14 23:53 EST 2012. Contains 205689 sequences.