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Number of distinct prime factors of A098550(n).
5

%I #5 Nov 30 2014 16:52:10

%S 0,1,1,1,1,1,2,2,1,2,1,2,2,1,1,2,2,2,1,2,2,1,1,2,2,2,2,2,1,1,2,2,2,2,

%T 2,2,2,2,3,1,2,2,1,3,2,2,2,2,2,2,1,2,2,2,2,2,1,2,2,2,1,1,2,2,1,2,2,2,

%U 2,2,3,2,3,2,2,2,2,3,1,3,2,2,2,2,2,2

%N Number of distinct prime factors of A098550(n).

%C a(n) = A001221(A098550(n)).

%H Reinhard Zumkeller, <a href="/A251138/b251138.txt">Table of n, a(n) for n = 1..10000</a>

%o (Haskell)

%o a251138 = a001221 . fromIntegral . a098550

%Y Cf. A001221, A098548, A251139, A251140.

%K nonn

%O 1,7

%A _Reinhard Zumkeller_, Nov 30 2014