864197532

Appears in sequences

• The differences 1-1, 21-12, 321-123, ..., 10987654321-12345678910, 1110987654321-1234567891011, etc.at n=8A019566
• n has distinct digits and 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).at n=3A055157
• 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=6A055160
• 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=8A099009
• Smallest member of cycle corresponding to n-th term of A151964.at n=14A151965
• Iterate the Kaprekar map of A151949 starting at the n-digit number 100...01; sequence gives the lowest number in the resulting cycle.at n=7A151967
• Consider the Kaprekar map n->K(n) defined in A151949. Sequence gives least elements of each cycle, including fixed points.at n=16A164718
• Subsequence of fixed points A099009 of the Kaprekar mapping with numbers of the form 8(x1+1)//6(x1+1)//4(x1+1)//3(x2)//2(x1)//1//9(x1+1)//7(x1+1)//6(x2)//5(x1+1)//3(x1+1)//1(x1)//2.at n=0A214557
• Subsequence of fixed points A099009 of the Kaprekar mapping with numbers of the form 8(x1+1)//7(2*x2)//6(x1+1)//5(x2)//4(x1+x2+1)//3(x2)//2(x1+x2)//1//9(x1+2*x2+1)//7(x1+x2+1)//6(x2)//5(x1+x2+1)//4(x2)//3(x1+1)//2(2*x2)//1(x1)//2.at n=0A214558
• a(n) = Sum_{i=0..n-1} i*10^i - Sum_{i=0..n-1} (n-1-i)*10^i.at n=8A338226