import java.util.Scanner;

public class Square {
public static void main(String[] args) {
	
	Scanner scan = new Scanner(System.in);
	int n = scan.nextInt();
	int a[][] =new int[n][n];
	a[0][n/2] =1;
	int x = 0,y =n/2;
	for(int k =2;k<=n*n;k++)
	{
		if(x==0&&y!=n-1)
		{
			x=n-1;y++;
			a[x][y]=k;
		}
		else if(y==n-1&&x!=0)
		{
			x--;y=0;
			a[x][y]=k;
		}
		else if(x==0&&y==n-1)
		{
			x++;
			a[x][y]=k;
		}
		else if(x!=0&&y!=n-1)
		{
			if(a[x-1][y+1]==0)
			{
				x--;
				y++;
				a[x][y] =k;
			}
			else {
				x++;
				a[x][y] =k;
			}
		}
	}
	for(int i =0;i<n;i++)
	{
		for(int j = 0;j<n;j++)
		{
			System.out.print(a[i][j]+" ");
		}
		System.out.println();
	}
}
	
}