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A068114 Integers of the form phi(n!)/phi(n)!. 0

%I

%S 1,4,96,384,34560,4147200,23224320,6220800,99532800,1605264998400,

%T 10319560704000,52973744947200,2517312359890944000,137731736862720000,

%U 104125193068216320000,1039086126666344300544000000

%N Integers of the form phi(n!)/phi(n)!.

%t Select[Table[EulerPhi[n!]/EulerPhi[n]!,{n,50}],IntegerQ] //DeleteDuplicates (* _Harvey P. Dale_, Sep 09 2017 *)

%K easy,nonn

%O 1,2

%A _Benoit Cloitre_, Mar 17 2002

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Last modified July 5 07:29 EDT 2020. Contains 335461 sequences. (Running on oeis4.)