OFFSET
1,1
EXAMPLE
PROG
(PARI) {m=1; k=0; for(n=2, 500000, if(matsize(factor(n))[1]==1&&factor(n)[1, 2]>1, d=n-m; if((k<2||b<c)&&(!k<1&&d<=c), print1(k, ", ")); k++; m=n; b=c; c=d))}
CROSSREFS
KEYWORD
nonn
AUTHOR
Klaus Brockhaus, Sep 27 2003
STATUS
approved