id:A083860 - OEIS Search Results

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First sub-diagonal of generalized Fibonacci array A083856.

+0
2

0, 1, 1, 5, 11, 55, 176, 937, 3781, 21571, 102455, 624493, 3356640, 21752431, 129055681, 884773585, 5696734715, 41129090011, 283908657880, 2149818248341, 15765656131765, 124759995175751, 965186517474191, 7956847444317049 (list; graph; listen)

	OFFSET	`0,4`
	FORMULA	`a(n)=(((1+sqrt(4n+5))/2)^n-((1-sqrt(4n+5))/2)^n)/sqrt(4n+5)`
	CROSSREFS	`Cf. A083859.` `Sequence in context: A109546 A018545 A028349 this_sequence A060358 A091798 A070198` `Adjacent sequences: A083857 A083858 A083859 this_sequence A083861 A083862 A083863`
	KEYWORD	`easy,nonn`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), May 06 2003`

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

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