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%I #2 Mar 30 2012 17:31:01
%S 1,0,1,1,1,1,1,2,2,2,2,2,2,3,3,3,1,2,2,2,2,1,2,3,1,2,2,3,1,2,3,2,2,1,
%T 2,2,2,6,2,1,3,4,5,2,5,3,2,3,3,3,3,2,4,3,4,5,6,1,3,2,4,2,2,4,3,2,3,6,
%U 4,6,4,3
%N Number of distinct prime factors of A095137(n).
%t PrimeFactors[n_] := Flatten[ Table[ #[[1]], {1} ] & /@ FactorInteger[n]]; f[n_] := Abs[ Product[ Prime[i], {i, 2, n, 2}] + Product[ Prime[i], {i, 1, n, 2}]]; f[1] = 2; Table[ Length[ PrimeFactors[ f[n]]], {n, 72}]
%Y Cf. A095137.
%K nonn
%O 1,8
%A _Robert G. Wilson v_, May 28 2004
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