541854domain: NAppears in sequencesNumber of primes between n*10^7 and (n+1)*10^7.at n=10A038827Number of primes between 10^n and 10^n+10^(n-1).at n=7A131043Triangle read by rows: T(n,k) is the number of primes in the half-open interval [10^n, 10^n + 10^k), n >= 1, 1 <= k <= n.at n=34A323744