OFFSET
1,4
FORMULA
(1/n)*Sum_{i=1..n} a(i) = C*log(n)+O(log(n)) with C = 0.5...
PROG
(PARI) for(n=1, 150, print1(sum(i=1, n, if(floor(n/i)%i, 0, 1)), ", "))
CROSSREFS
KEYWORD
nonn
AUTHOR
Benoit Cloitre, Dec 12 2001
STATUS
approved