id:A078572 - OEIS Search Results

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Minimal exponent in prime factorization of the average of n-th twin prime pair.

+0
4

2, 1, 1, 1, 1, 1, 1, 2, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`a(n)=A051904(A014574(n)).`
	EXAMPLE	`10-th twin prime pair = (A001359(10), A006512(10)) = (107,109), hence A014574(10) = 108 = 2^2 * 3^2, therefore a(10) = 2.`
	CROSSREFS	`Cf. A078571, A078572.` `Sequence in context: A120336 A039738 A075774 this_sequence A122750 A030421 A085021` `Adjacent sequences: A078569 A078570 A078571 this_sequence A078573 A078574 A078575`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Nov 29 2002`

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Last modified December 15 00:47 EST 2009. Contains 170825 sequences.

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