1201804domain: NAppears in sequencesSmallest k for which k, 2k, ... n*k all contain the digit 2.at n=21A039933Smallest k for which k, 2k, ... n*k all contain the digit 2.at n=22A039933Smallest k for which k, 2k, ... n*k all contain the digit 2.at n=23A039933