id:A078571 - OEIS Search Results

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Total number of prime factors of the average of n-th twin prime pair.

+0
6

2, 2, 3, 3, 3, 3, 4, 5, 3, 5, 3, 4, 5, 7, 4, 4, 6, 5, 3, 5, 4, 5, 7, 4, 4, 4, 6, 3, 3, 5, 6, 3, 5, 4, 5, 5, 5, 5, 4, 5, 9, 4, 4, 4, 4, 6, 5, 5, 4, 6, 5, 7, 4, 3, 4, 4, 7, 3, 5, 5, 5, 5, 3, 6, 8, 4, 5, 3, 7, 5, 6, 3, 5, 9, 3, 9, 5, 5, 5, 3, 6, 7, 7, 8, 4, 4, 6, 5, 8, 4, 4, 3, 5, 7, 5, 3, 4, 7, 5, 5, 5, 3, 4, 4, 5 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`a(n)=A001222(A014574(n)).`
	EXAMPLE	`12-th twin prime pair = (A001359(12), A006512(12)) = (149,151), hence A014574(12) = 150 = 235*5, therefore a(12) = 4.`
	CROSSREFS	`Cf. A078570, A078572.` `Sequence in context: A073642 A108356 A055656 this_sequence A071860 A004788 A034584` `Adjacent sequences: A078568 A078569 A078570 this_sequence A078572 A078573 A078574`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Nov 29 2002`

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Last modified December 7 23:50 EST 2009. Contains 170430 sequences.

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