OFFSET
1,12
FORMULA
It seems that for n>=43 a(n) = 0
PROG
(PARI) a(n)=sum(i=1, n, sum(j=1, i, if(1/i+1/j+1/n-1/2, 0, 1)))
CROSSREFS
KEYWORD
nonn
AUTHOR
Benoit Cloitre, Dec 08 2002
STATUS
approved