OFFSET
1,3
PROG
(PARI) for(n=1, 130, print1(sum(i=1, n, sum(j=1, i, if(prime(i)+prime(j)-i*numdiv(i)-j*numdiv(j), 0, 1))), ", "))
CROSSREFS
KEYWORD
nonn
AUTHOR
Benoit Cloitre, Jun 06 2002
STATUS
approved