import java.util.Scanner;

public class Pattern21

{

public static void main(String[] args)

{

int i, j, min, n; //n is the number up to you want to print

System.out.print("Enter the value of n: ");

Scanner sc= new Scanner(System.in);

n=sc.nextInt();

//loo for upper left part

for (i = 1; i <= n; i++)

{

for (j = 1; j <= n; j++)

{

min = i < j ? i : j;

System.out.print(n - min + 1+ " ");

}

//loop for upper right part

for (j = n - 1; j >= 1; j--)

{

min = i < j ? i : j;

System.out.print(n - min + 1+ " ");

}

System.out.println();

}

//loop for lower left part

for (i = n - 1; i >= 1; i--)

{

for (j = 1; j <= n; j++)

{

min = i < j ? i : j;

System.out.print(n - min + 1+ " ");

}

//loop for lower right part

for (j = n - 1; j >= 1; j--)

{

min = i < j ? i : j;

System.out.print(n - min + 1+ " ");

}

System.out.println();

}

}

}