251711domain: NAppears in sequencesNumbers k such that prime(k) == 9 (mod k).at n=8A023151Number of solutions to x*frac[p(x)/x]<=Log[n] or A004648(n)<=Log[n].at n=38A099641Least integer k > 0 such that prime(k) - k*n is a square.at n=13A247893