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A113825
Number of distinct prime factors of A008351(n).
0
0, 1, 2, 2, 1, 2, 3, 5, 4, 5, 5, 7, 2
OFFSET
1,3
EXAMPLE
The number of distinct prime factors of 212 is 2 which is the third term in the sequence.
CROSSREFS
A008351: Concatenate a(n-1) and a(n-2) with a(1)=1 & a(2)=2.
Cf. A008351.
Sequence in context: A200114 A120652 A330608 * A011138 A022479 A327201
KEYWORD
hard,nonn,base
AUTHOR
Parthasarathy Nambi, Jan 23 2006
EXTENSIONS
a(11)-a(13) from Robert G. Wilson v, Jan 27 2006
STATUS
approved