id:A084391 - OEIS Search Results

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For n>3, a(n) = smallest number divisible by exactly n-2 previous terms; a(n)=n for n<=3.

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1, 2, 3, 4, 6, 18, 12, 24, 36, 108, 72, 144, 216, 648, 432, 864, 1296, 3888, 2592, 5184, 7776, 23328, 15552, 31104, 46656, 139968, 93312, 186624, 279936, 839808, 559872, 1119744, 1679616, 5038848, 3359232, 6718464, 10077696, 30233088 (list; graph; listen)

	OFFSET	`1,2`
	COMMENT	`Values are 3-smooth (A003586).`
	FORMULA	`G.f. [x * (6x^6-6x^5-4x^3-3x^2-2x-1)]/(1-6x^4) (conjectured). - Ralf Stephan, Feb 03 2004`
	CROSSREFS	`Adjacent sequences: A084388 A084389 A084390 this_sequence A084392 A084393 A084394` `Sequence in context: A102946 A026094 A069860 this_sequence A115035 A065199 A033179`
	KEYWORD	`nonn`
	AUTHOR	`Amarnath Murthy (amarnath_murthy(AT)yahoo.com), May 30 2003`
	EXTENSIONS	`More terms from Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Jun 02 2003`

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Last modified October 10 20:39 EDT 2008. Contains 144831 sequences.

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