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mpf(n)^Omega(n), where mpf(n) is the median prime factor of n (A079879).
2

%I #4 Mar 30 2012 18:50:30

%S 1,2,3,4,5,4,7,8,9,4,11,8,13,4,9,16,17,27,19,8,9,4,23,16,25,4,27,8,29,

%T 27,31,32,9,4,25,16,37,4,9,16,41,27,43,8,27,4,47,32,49,125,9,8,53,81,

%U 25,16,9,4,59,16,61,4,27,64,25,27,67,8,9,125,71,32,73,4,125,8,49,27,79,32

%N mpf(n)^Omega(n), where mpf(n) is the median prime factor of n (A079879).

%C A068794(n)<=a(n)<=A068795(n);

%C a(m)=m=A068794(m)=A068795(m) iff m is a prime power (A000961).

%Y a(n)=A079879(n)^A001222(n), A033676, O000004.

%K nonn

%O 1,2

%A _Reinhard Zumkeller_, Jan 13 2003