221111domain: NAppears in sequencesComposite numbers n such that largest digit of all divisors of n is 2.at n=13A221698Positive numbers n such that (digitsum(n))^2 equals (product of digits(n))^3.at n=20A261778List of co-Lyndon words on {1,2} sorted first by length and then lexicographically.at n=16A329318