id:A074214 - OEIS Search Results

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F(n) and F(2n) have the same largest prime factor where F(k) denotes the k-th Fibonacci number.

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3, 15, 21, 23, 25, 29, 33, 35, 39, 43, 45, 51, 55, 59, 63, 65, 75, 82, 83, 85, 87, 93, 99, 105, 107, 109, 111, 115, 119, 123, 125, 127, 131, 132, 133, 135, 137, 139, 142, 143, 145, 147, 151, 153, 158, 161, 166, 171, 173, 175, 179, 181, 183, 185, 187, 189, 191 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`Why are even values rare? (First one is 82.)`
	EXAMPLE	`F(15) = 610 = 2561 and F(30) = 832040 = 2^35113161 hence 15 is in the sequence.`
	CROSSREFS	`Adjacent sequences: A074211 A074212 A074213 this_sequence A074215 A074216 A074217` `Sequence in context: A097571 A048087 A001897 this_sequence A036897 A129966 A110172`
	KEYWORD	`nonn`
	AUTHOR	`Benoit Cloitre (benoit7848c(AT)orange.fr), Sep 17 2002`
	EXTENSIONS	`More terms from Don Reble (djr(AT)nk.ca), Sep 20 2002`

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Last modified October 13 20:18 EDT 2008. Contains 145016 sequences.

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