The OEIS is supported by the many generous donors to the OEIS Foundation.
Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
%I #2 Apr 03 2014 11:35:06
%S 1,1,1,3,1,30,1,105,28,630,1,207900,1,12012,45045,675675,1,171531360,
%T 1,2618916300,3527160,3879876,1,139143023019000,10626,67603900,
%U 43743700,21925567263600,1,2360561385517335000,1,203067496256625,14902327440
%N (n-1)! divided by (product phi(d)! ; d divides n).
%o (PARI) a(n) = (n-1)! / prod(i=1, n, if(n%i==0, eulerphi(i)!, 1))
%Y Cf. A120065.
%K nonn
%O 1,4
%A _Martin Fuller_, Jun 06 2006