1234570896domain: NAppears in sequencesa(n) is the least multiple of n that contains all digits 0-9 at least once.at n=7A391190a(n) is the least multiple of n that contains all digits 0-9 at least once.at n=15A391190a(n) is the least multiple of n that contains all digits 0-9 at least once.at n=23A391190