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A079085 Number of distinct prime factors of (prime(n)+1)*(prime(n+1)+1)/4. 5
1, 2, 2, 2, 3, 2, 3, 3, 3, 3, 2, 3, 4, 3, 2, 3, 4, 3, 3, 3, 3, 4, 4, 3, 3, 4, 3, 4, 4, 3, 3, 4, 5, 4, 4, 3, 3, 4, 4, 4, 5, 4, 3, 3, 4, 3, 3, 4, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 4, 4, 4, 5, 4, 3, 4, 3, 4, 5, 4, 4, 4, 4, 5, 4, 4, 4, 3, 4, 5, 5, 3, 4, 5, 5, 4, 3, 4, 5, 4, 4, 4, 4, 4, 4, 5, 4, 4, 3, 3, 4, 4, 5, 6, 4 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

COMMENTS

a(n)=A001221(A079079(n)).

CROSSREFS

Cf. A079086.

Sequence in context: A131839 A143299 A076984 * A076869 A104307 A128330

Adjacent sequences:  A079082 A079083 A079084 * A079086 A079087 A079088

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Dec 22 2002

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Last modified February 17 03:45 EST 2012. Contains 205978 sequences.