39970domain: NAppears in sequencesNumbers which when multiplied by any repunit prime Rp give a Smith number.at n=19A104167Largest positive integer m with pi(m*n) = m + n, where pi(x) denotes the number of primes not exceeding x.at n=7A303910G.f. A(x) satisfies A(x) = ( 1 + x*A(x)^(5/3)/(1 + x*A(x)) )^3.at n=6A378951