A080748 Number of distinct prime factors of n-th Fermat pseudoprime to base 2.

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

Offset: 1

Author

Benoit Cloitre, Mar 08 2003

Keywords

• nonn

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.