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A080748 Number of distinct prime factors of n-th Fermat pseudoprime to base 2. 1
2, 3, 3, 3, 2, 3, 3, 2, 3, 2, 3, 2, 2, 2, 3, 2, 2, 3, 2, 2, 3, 3, 2, 3, 4, 3, 3, 2, 3, 2, 2, 3, 3, 4, 2, 2, 4, 2, 3, 3, 3, 3, 2, 2, 2, 3, 3, 2, 4, 4, 3, 2, 3, 2, 2, 3, 4, 3, 2, 2, 4, 4, 2, 2, 3, 4, 3, 4, 2, 2, 3, 2, 3, 2, 3, 2, 3, 3 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

What is the average order of this sequence? In particular, is it bounded? For extremal behavior, see A007011. - Charles R Greathouse IV, Sep 12 2012

LINKS

Charles R Greathouse IV, Table of n, a(n) for n = 1..10000

CROSSREFS

Cf. A001567.

Sequence in context: A210681 A096520 A236552 * A305374 A084966 A303432

Adjacent sequences:  A080745 A080746 A080747 * A080749 A080750 A080751

KEYWORD

nonn

AUTHOR

Benoit Cloitre, Mar 08 2003

STATUS

approved

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Last modified March 25 10:08 EDT 2019. Contains 321469 sequences. (Running on oeis4.)