id:A087347 - OEIS Search Results

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Numbers n such that n divides sum(k=1,n,F(n*k)) where F(k) denotes the k-th Fibonacci number.

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1, 2, 5, 8, 12, 15, 20, 24, 25, 32, 36, 44, 48, 50, 56, 60, 63, 72, 80, 84, 95, 96, 104, 108, 110, 120, 125, 128, 135, 140, 144, 152, 155, 168, 175, 180, 185, 192, 200, 204, 207, 209, 216, 224, 228, 240, 252, 264, 276, 279, 288, 300, 320, 323, 324, 336, 360, 368 (list; graph; listen)

	OFFSET	`1,2`
	FORMULA	`Conjecture: a(n) is asymptotic to cnlog(n) with c around 1.3.`
	CROSSREFS	`Sequence in context: A108311 A080753 A156745 this_sequence A062468 A061717 A003314` `Adjacent sequences: A087344 A087345 A087346 this_sequence A087348 A087349 A087350`
	KEYWORD	`nonn`
	AUTHOR	`Benoit Cloitre (benoit7848c(AT)orange.fr), Oct 20 2003`
	EXTENSIONS	`More terms from Ray Chandler (rayjchandler(AT)sbcglobal.net), Oct 22 2003`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

AT&T Labs Research