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For the Landau function L(n), A000793, this sequence gives the largest prime which is a factor of L(n).

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1, 2, 3, 2, 3, 3, 3, 5, 5, 5, 5, 5, 5, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 11, 11, 7, 11, 11, 13, 13, 11, 11, 11, 11, 13, 13, 11, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 17, 17, 17, 17, 17, 19, 19, 17, 17, 7, 17, 19, 19, 17, 17, 19, 19, 19, 19, 19, 19, 17, 19 (list; graph; listen)

	OFFSET	`1,2`
	COMMENT	`This function is not monotone increasing, for example a(33) = 13 while a(34) = 11.`
	FORMULA	`a(n) = A006530[A000793(n)]. - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), May 17 2007`
	EXAMPLE	`L(29) = 2520, whose largest prime factor is 7. So a(29) = 7.`
	CROSSREFS	`Cf. A000793, A128305.` `Adjacent sequences: A129756 A129757 A129758 this_sequence A129760 A129761 A129762` `Sequence in context: A083060 A102351 A078173 this_sequence A137467 A078627 A106370`
	KEYWORD	`nonn`
	AUTHOR	`Anthony C Robin (anthony_robin(AT)hotmail.com), May 15 2007`
	EXTENSIONS	`More terms from Klaus Brockhaus (klaus-brockhaus(AT)t-online.de) and R. J. Mathar (mathar(AT)strw.leidenuniv.nl), May 16 2007`

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Last modified October 7 14:39 EDT 2008. Contains 144666 sequences.

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