16399953domain: NAppears in sequencesList of fixed points of the base-4 Kaprekar map A165012.at n=25A165016Consider the base-4 Kaprekar map n->K(n) defined in A165012. Sequence gives least elements of each cycle, including fixed points.at n=29A165021Smallest member of cycle corresponding to n-th term of A165029.at n=28A165030