id:A081320 - OEIS Search Results

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Largest 3-smooth divisor of n-th Fibonacci number.

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1, 1, 2, 3, 1, 8, 1, 3, 2, 1, 1, 144, 1, 1, 2, 3, 1, 8, 1, 3, 2, 1, 1, 288, 1, 1, 2, 3, 1, 8, 1, 3, 2, 1, 1, 432, 1, 1, 2, 3, 1, 8, 1, 3, 2, 1, 1, 576, 1, 1, 2, 3, 1, 8, 1, 3, 2, 1, 1, 144, 1, 1, 2, 3, 1, 8, 1, 3, 2, 1, 1, 864, 1, 1, 2, 3, 1, 8, 1, 3, 2, 1, 1, 144, 1, 1, 2, 3, 1, 8, 1, 3, 2, 1, 1, 1152, 1 (list; graph; listen)

	OFFSET	`1,3`
	COMMENT	`Conjecture: for n>12 and n>0 modulo 12: a(n)=a(n-12) and a(12k)=A065331(k)144.`
	EXAMPLE	`Fibonacci(36) = 14930352 = 2^4 * 3^3 * 17 * 19 * 107, therefore` `a(36) = 2^4 * 3^3 = 432.`
	CROSSREFS	`Cf. A003586, a(n)=A065331(A000045(n)).` `Sequence in context: A104027 A097710 A109198 this_sequence A147865 A011152 A078298` `Adjacent sequences: A081317 A081318 A081319 this_sequence A081321 A081322 A081323`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), May 20 2003`

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Last modified December 7 08:40 EST 2009. Contains 170430 sequences.

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