OFFSET
1,4
FORMULA
a(n) <= n/2 It seems that limit_inf n ->infinity a(n)/n = 0.1.....
PROG
(PARI) a(n)=sum(k=1, n, if(gcd(n, k)-floor(n/k), 0, 1))
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Benoit Cloitre, Oct 05 2002
STATUS
approved