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A096919 Greatest prime factor of n-th product of 3 distinct primes. 7

%I #8 Jan 17 2015 17:46:01

%S 5,7,11,7,13,17,7,11,19,13,23,11,11,17,29,13,31,19,13,37,23,11,17,41,

%T 17,43,19,13,47,19,13,29,31,53,23,23,59,17,61,37,17,11,19,67,29,41,19,

%U 71,13,43,31,29,73,17,13,31,47,79,23,19,83,23,37,53,89,37,17,41,97,59

%N Greatest prime factor of n-th product of 3 distinct primes.

%C A096917(n)*A096918(n)*a(n) = A007304(n); A096917(n) < A096918(n) < a(n);

%C a(n) = A006530(A007304(n)).

%t f[n_]:=Last/@FactorInteger[n]=={1,1,1};f1[n_]:=Min[First/@FactorInteger[n]];f2[n_]:=Max[First/@FactorInteger[n]];lst={};Do[If[f[n],AppendTo[lst,f2[n]]],{n,0,7!}];lst (* _Vladimir Joseph Stephan Orlovsky_, Apr 10 2010 *)

%K nonn

%O 1,1

%A _Reinhard Zumkeller_, Jul 15 2004

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Last modified April 24 04:02 EDT 2024. Contains 371918 sequences. (Running on oeis4.)