id:A034970 - OEIS Search Results

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a(n) is the greatest prime factor of a(n-2)*a(n-1)-1.

+0
2

2, 3, 5, 7, 17, 59, 167, 821, 2539, 1042259, 508903, 5765312303, 1461701, 1404527126434567, 647659, 2784782074438501, 43889, 4400882200238779, 27711666985119049, 22250507, 6763, 3943, 751, 9491, 356387, 1930633, 8768351 (list; graph; listen)

	OFFSET	`0,1`
	CROSSREFS	`Sequence in context: A001153 A100532 A040149 this_sequence A048417 A071710 A048403` `Adjacent sequences: A034967 A034968 A034969 this_sequence A034971 A034972 A034973`
	KEYWORD	`nonn,easy,nice`
	AUTHOR	`Erich Friedman (erich.friedman(AT)stetson.edu).`
	EXTENSIONS	`Cf. A031441.` `More terms from James A. Sellers (sellersj(AT)math.psu.edu)`

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Last modified July 26 23:19 EDT 2008. Contains 142293 sequences.

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