id:A153076 - OEIS Search Results

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Smallest number m such that sigma(m) = A002110(n) where A002110(n) is the product of the first n primes.

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5, 29, 104, 1538, 13842, 188424, 3249576, 101864576, 2388809736, 59720243400, 2571228006912, 85266458294400, 6038197537693842, 227036227417289064, 12129959730964036050, 606111287080086323712, 36186481977293685109248 (list; graph; listen)

	OFFSET	`2,1`
	LINKS	`Ray Chandler, Table of n, a(n) for n=2..21`
	FORMULA	`a(n) = A051444(A002110(n)). - Chandler`
	EXAMPLE	`a(9) = 101864576. Sigma(101864576) = A002110(9) = 223092870 = 23571113171923.`
	CROSSREFS	`Cf. A000203, A002110, A153077, A153078.` `Sequence in context: A139856 A097345 A097344 this_sequence A034700 A057721 A085151` `Adjacent sequences: A153073 A153074 A153075 this_sequence A153077 A153078 A153079`
	KEYWORD	`nonn`
	AUTHOR	`Donovan Johnson (donovan.johnson(AT)yahoo.com), Dec 19 2008`
	EXTENSIONS	`Extended by Ray Chandler (rayjchandler(AT)sbcglobal.net), Dec 28 2008`

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Last modified November 23 17:09 EST 2009. Contains 167438 sequences.

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