102469

Appears in sequences

• a(n) = numerator of fraction whose decimal representation is (n).(1)(2)(3)...(n-1)(n).at n=4A172495
• Semiprimes which have one or more occurrences of exactly six different digits.at n=16A235694
• Number of rooted identity trees with n colored non-root nodes where the set of colors equals {1,...,k} for some k <= n.at n=6A319220