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A078573 Maximal exponent in prime factorization of the average of n-th twin prime pair. 0
2, 1, 2, 2, 1, 1, 2, 3, 1, 3, 1, 2, 2, 6, 2, 2, 4, 3, 1, 3, 2, 2, 4, 1, 2, 1, 3, 1, 1, 2, 4, 1, 2, 1, 2, 2, 3, 2, 2, 2, 7, 1, 2, 1, 1, 3, 2, 2, 1, 4, 3, 4, 2, 1, 1, 2, 4, 1, 2, 2, 3, 2, 1, 3, 6, 1, 2, 1, 4, 1, 2, 1, 2, 5, 1, 7, 3, 1, 2, 1, 3, 3, 4, 5, 2, 2, 2, 2, 5, 2, 1, 1, 2, 3, 2, 1, 2, 3, 3, 2, 2, 1, 1, 1, 2 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

COMMENTS

a(n)=A051903(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) = 3.

CROSSREFS

Cf. A078570, A078572.

Sequence in context: A026606 A161175 A095955 * A143786 A035176 A011793

Adjacent sequences:  A078570 A078571 A078572 * A078574 A078575 A078576

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Nov 29 2002

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Last modified February 16 17:48 EST 2012. Contains 205939 sequences.