109999999999domain: NAppears in sequencesa(n) is that n-digit number m which minimizes m/(sum of digits of m); in case of a tie pick the smallest.at n=11A066007Number of palindromes of length <= n.at n=20A07019910 followed by 2n 9's.at n=5A133383a(n) = 11*10^n - 1.at n=10A198700