OFFSET
1,3
LINKS
Amiram Eldar, Table of n, a(n) for n = 1..808
FORMULA
If n>2 is prime, a(n) = (n-1)*a(n-2). If n=2*p, where p is odd prime, a(n)=(n-2)*a(n-2). Otherwise, a(n) = n*a(n-2). - Max Alekseyev, May 26 2007
MATHEMATICA
Table[EulerPhi[n!! ], {n, 1, 30}] (* Stefan Steinerberger, May 30 2007 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Leroy Quet, May 26 2007
EXTENSIONS
More terms from Stefan Steinerberger, May 30 2007
STATUS
approved