554999445

Appears in sequences

• Numbers n with the property that n=a-b where a has the digits of n in descending order and b has the digits of n in ascending order (perhaps with leading zeros), ordered by a.at n=7A055160
• Fixed points of the Kaprekar mapping f(n) = n' - n'', where in n' the digits of n are arranged in descending, in n'' in ascending order.at n=7A099009
• Smallest member of cycle corresponding to n-th term of A151964.at n=16A151965
• Consider the Kaprekar map n->K(n) defined in A151949. Sequence gives least elements of each cycle, including fixed points.at n=14A164718
• Subsequence of fixed points A099009 of the Kaprekar mapping with numbers of the form 5(n)//4//9(n+1)//4(n)//5.at n=2A214555