// 魔術方塊
import java.io.*;
public class a13a {
        public static void main(String args[]) throws Exception
        {  //程式進入點
           String getbr;
           int i,j,scale,cnt;
	   int x_pt,y_pt,nx_pt,ny_pt;
	   int matrix[][]=new int [15][15]; 
	   BufferedReader br= new BufferedReader(new InputStreamReader(System.in));
           while (true)
           {
		         for (i=0;i<15;i++)
				 for (j=0;j<15;j++)
					 matrix[i][j]=0;
                do
                {
                        System.out.print("請輸入奇數階數：");
                        getbr = br.readLine();
			 if (getbr.equals("0")) //判斷結束
                        {
				System.out.println("結束！");
				return;
			}
			scale=Integer.parseInt(getbr);
			if ((scale%2)==0 ) //長度超過或不足
			{
					System.out.println("請輸入奇數！");
			} else if ( scale<0 || scale>15)  System.out.println("輸入數字長度不對請重新輸入");
                } while ( (scale%2)==0 || scale<0 || scale>15);
		y_pt=0;
		x_pt=scale/2;
		cnt=scale*scale; 
		for (i=1;i<=cnt;i=i+1)
		{
			matrix[y_pt][x_pt]=i;
			ny_pt=y_pt-1;
			if (ny_pt<0) ny_pt=scale-1;
			nx_pt=x_pt+1;
			if (nx_pt>=scale) nx_pt=0;
			if (matrix[ny_pt][nx_pt]!=0) //已填過且不是最後一個
			{
				ny_pt=y_pt+1;//跳到下一列
				if (ny_pt>=scale) ny_pt=0;
			       nx_pt=x_pt; //X保持原狀
				
			}
			x_pt=nx_pt;
			y_pt=ny_pt;
		}
		/*****印出方陣*********/
		for (i=0;i<scale;i=i+1)
		{
				 for (j=0;j<scale;j=j+1)
					 System.out.print(matrix[i][j]+"\t");
				 System.out.println(""); 
		}
		
        }//while(true)
   }
}