id:A082572 - OEIS Search Results

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a(n) is the least number m such that the arithmetic mean of the distinct primes dividing m equals n.

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2, 3, 15, 5, 35, 7, 39, 65, 51, 11, 95, 13, 115, 161, 87, 17, 155, 19, 111, 185, 123, 23, 215, 141, 235, 329, 159, 29, 371, 31, 183, 305, 427, 201, 335, 37, 219, 365, 511, 41, 395, 43, 415, 581, 267, 47, 623, 1501, 291, 485, 303, 53, 515, 321, 327, 545, 339, 59 (list; graph; listen)

	OFFSET	`2,1`
	COMMENT	`Are there any terms with more than 3 prime factors?`
	EXAMPLE	`a(6) = 35 because the prime factors of 35 are {5, 7}, which have mean 6.`
	CROSSREFS	`Cf. A070009.` `Adjacent sequences: A082569 A082570 A082571 this_sequence A082573 A082574 A082575` `Sequence in context: A101003 A042071 A042817 this_sequence A075244 A088030 A101047`
	KEYWORD	`easy,nonn`
	AUTHOR	`David Wasserman (wasserma(AT)spawar.navy.mil), May 06 2003`

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Last modified October 15 09:18 EDT 2008. Contains 145015 sequences.

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