313390domain: NAppears in sequencesKaprekar triples: q such that q = x + y + z and q^3 = x*10^2n + y*10^n + z, where z < 10^n and n is the number of digits in q. q is not a power of 10 (except q=1).at n=22A006887Erroneous version of A006887.at n=23A060809