id:A050693 - OEIS Search Results

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String of composite a(n) ends with its largest prime factor.

+0
3

15, 25, 32, 45, 75, 125, 135, 147, 225, 243, 375, 405, 512, 567, 625, 675, 1125, 1215, 1875, 2025, 3087, 3125, 3375, 3645, 5625, 6075, 8192, 9375, 10125, 10935, 11907, 12943, 13013, 13467, 14147, 14271, 14673, 15625, 15879, 15953, 16683, 16807 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`E.g. 16683 = 166{83} = 3.67.{83}.`
	CROSSREFS	`Cf. A050691, A050692.` `Adjacent sequences: A050690 A050691 A050692 this_sequence A050694 A050695 A050696` `Sequence in context: A106613 A102802 A050692 this_sequence A069823 A133321 A031888`
	KEYWORD	`nonn,base`
	AUTHOR	`Patrick De Geest (pdg(AT)worldofnumbers.com), Aug 15 1999.`

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Last modified October 11 09:12 EDT 2008. Contains 144832 sequences.

AT&T Labs Research