150886domain: NAppears in sequencesa(n) = 10*a(n-1)+n^2, a(0)=0.at n=6A032343a(n) is the least number k such that 1/prime(k) has repeating decimal expansion of period n.at n=37A338792Index of the smallest prime p such that the number of digits L in the repeating decimal period of 1/p equals the n-th prime.at n=11A386519