id:A071224 - OEIS Search Results

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LCM of n and n-th composite number.

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4, 6, 24, 36, 10, 12, 14, 120, 144, 90, 220, 84, 286, 168, 75, 208, 459, 252, 570, 160, 231, 374, 805, 72, 950, 78, 1080, 84, 1276, 90, 1426, 96, 1617, 850, 1785, 468, 1998, 2090, 2184, 2280, 2378, 420, 2666, 2772, 2880, 2990, 3102, 816, 3381 (list; graph; listen)

	OFFSET	`1,1`
	FORMULA	`a(n) = n*A002808(n)/A064814(n). - Lior Manor (lior.manor(AT)gmail.com) Jun 02 2002`
	EXAMPLE	`a(10)=90 as 18 is the 10th composite number and 1018/gcd(10,18)=1018/2=90.`
	CROSSREFS	`Sequence in context: A107952 A123046 A087784 this_sequence A164532 A098660 A122174` `Adjacent sequences: A071221 A071222 A071223 this_sequence A071225 A071226 A071227`
	KEYWORD	`nonn`
	AUTHOR	`Amarnath Murthy (amarnath_murthy(AT)yahoo.com), May 17 2002`
	EXTENSIONS	`More terms from Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), May 28 2002` `More terms from Lior Manor (lior.manor(AT)gmail.com) Jun 02 2002`

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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.

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