id:A115022 - OEIS Search Results

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a(n) = F(nth squarefree)/product{p=primes,p|(nth squarefree)} F(p), where F(m) is m-th Fibonacci number.

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1, 1, 1, 1, 4, 1, 11, 1, 1, 29, 61, 1, 1, 421, 199, 1, 521, 1, 83204, 1, 19801, 3571, 141961, 1, 9349, 135721, 1, 10304396, 1, 64079, 1, 6376021, 1, 313671601, 43701901, 1149851, 1, 1, 3010349, 14736206161, 156055561996, 1, 2053059121 (list; graph; listen)

	OFFSET	`1,5`
	EXAMPLE	`The 7th squarefree integer is 10 = 25. So a(7) = F(10)/(F(2)F(5)) = 55/(15) = 11.`
	CROSSREFS	`Cf. A075731.` `Sequence in context: A019213 A019128 A121463 this_sequence A091156 A092288 A111964` `Adjacent sequences: A115019 A115020 A115021 this_sequence A115023 A115024 A115025`
	KEYWORD	`nonn`
	AUTHOR	`Leroy Quet (qq-quet(AT)mindspring.com), Feb 28 2006`
	EXTENSIONS	`More terms from Joshua Zucker (joshua.zucker(AT)stanfordalumni.org), Jul 18 2007`

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Last modified November 18 20:14 EST 2008. Contains 147244 sequences.

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