#include<iostream>
#include<cstdio>
#include<algorithm>
#include<cstring>
using namespace std;
int pic[50][50];
int n;
int x,y;
void place(int a){
	 if(x==1&&y!=n)
	 {
	 	x=n;
	 	y+=1;
	 	pic[x][y]=a;
	 	return ;
	 }
	 if(y==n&&x!=1)
	 {
	 	y=1;
	 	x-=1;
	 	pic[x][y]=a;
	    return;
	 }
	 if(x==1&&y==n)
	 {
	 	x+=1;
	 	pic[x][y]=a;
	    return;
	 }
	 if(x!=1&&y!=n)
	 {
	 	if(!pic[x-1][y+1])
	 	{
	 		x-=1;
	 		y+=1;
	 		pic[x][y]=a;
		 }
		 else
		 {
		 	x+=1;
		 	pic[x][y]=a;
		 }
	 }
} 
int main()
{
	freopen("2015magic.in","r",stdin);
	freopen("2015magic.out","w",stdout);
	scanf("%d",&n);
	x=1;y=(n+1)/2;
	pic[x][y]=1;
	for(int i=2;i<=n*n;i++)
	place(i);
	for(int i=1;i<=n;i++)
	{
		for(int j=1;j<=n;j++)
		printf("%d ",pic[i][j]);
		printf("\n");
	}
	return 0;
}