id:A095386 - OEIS Search Results

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Largest prime factor of peak values of 3x+1 trajectory started at n.

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2, 2, 2, 2, 2, 13, 2, 13, 2, 13, 2, 5, 13, 5, 2, 13, 13, 11, 5, 2, 13, 5, 3, 11, 5, 577, 13, 11, 5, 577, 2, 5, 13, 5, 13, 7, 11, 19, 5, 577, 2, 7, 13, 17, 5, 577, 3, 37, 11, 29, 13, 5, 577, 577, 7, 7, 11, 19, 5, 23, 577, 577, 2, 7, 5, 19, 17, 13, 5, 577, 3, 577, 7, 17, 11, 29, 19, 101, 5 (list; graph; listen)

	OFFSET	`2,1`
	FORMULA	`a[n]=A006530[A025586(n)]`
	EXAMPLE	`n=27: peak=9232=2.2.2.2.577, so a[27]=577;` `More extensive search suggests that all primes may occur as largest prime factor of peak.`
	CROSSREFS	`Cf. A006530, A025586.` `Sequence in context: A010671 A088050 A058005 this_sequence A060359 A029665 A056993` `Adjacent sequences: A095383 A095384 A095385 this_sequence A095387 A095388 A095389`
	KEYWORD	`nonn`
	AUTHOR	`Labos E. (labos(AT)ana.sote.hu), Jun 14 2004`

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Last modified August 29 17:54 EDT 2008. Contains 143238 sequences.

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