OFFSET
1,9
PROG
(PARI) for(n=1, 130, print1(sum(i=1, n, sum(j=1, n, if(numdiv(i^j)-i-j, 0, 1))), ", "))
CROSSREFS
KEYWORD
nonn
AUTHOR
Benoit Cloitre, Jun 06 2002
STATUS
approved