OFFSET
0,1
COMMENTS
Conjecture: a(n) = 1 for n > 65. - Charles R Greathouse IV, Apr 07 2013
LINKS
PROG
(PARI) a(n)=n=n!; while(n>119, my(e=valuation(n, 2), e1=valuation((n>>=e)+1, 2)); n>>=e1; if(e>2 && e1>3, return(1))); 0 \\ Charles R Greathouse IV, Apr 07 2013
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Reinhard Zumkeller, Feb 12 2005
STATUS
approved