id:A088948 - OEIS Search Results

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(A006530[x]+A020639[x])/2 is an integer; that is, arithmetical mean of least and largest prime factor is an integer.

+0
3

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	OFFSET	`1,1`
	EXAMPLE	`Primes and prime powers are here. Also other composites: n=105, (3+7)/2=5 is an integer moreover divides n.`
	CROSSREFS	`Different from A046687.` `Cf. A006530, A020639, A088949, A088949, A046687.` `Sequence in context: A046687 A078175 A078174 this_sequence A115405 A056867 A062491` `Adjacent sequences: A088945 A088946 A088947 this_sequence A088949 A088950 A088951`
	KEYWORD	`nonn`
	AUTHOR	`Labos E. (labos(AT)ana.sote.hu), Nov 20 2003`

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Last modified November 27 14:50 EST 2009. Contains 167570 sequences.

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