#include <fstream>
#include <cstring>
#include <algorithm>
#define ifs ifstream
#define ofs ofstream
#define MAX 51
using namespace std;
ifs fin("2015magic.in");
ofs fout("2015magic.out");
int map[MAX][MAX];
bool vis[MAX];
int n;
int csh()
{
	memset(map,0,sizeof(map));
	//memset(vis,false,sizeof(vis));
	return 0;
}
int work()
{

	fin>>n;
	int row=1,col=(n+1)/2;
	map[row][col]=1;
	for(int i=2;i<=n*n;i++)
	{
		if(row==1&&col!=n)
		{
			map[n][col+1]=i;
			row=n,col++;
		}
		else if(col==n&&row!=1)
		{
			map[row-1][1]=i;
			row--,col=1;
		}
		else if(row==1&&col==n)
		{
			map[row+1][col]=i;
			row++;
		}
		else 
		{
			if(map[row-1][col+1]!=0)
			{
				map[row+1][col]=i;
				row++;
			}
			else
			{
				map[row-1][col+1]=i;
				row--,col++;
			}
		}
	}
	return 0;
}
int output()
{
	for(int i=1;i<=n;i++)
	{
		for(int j=1;j<=n;j++)
		{
			fout<<map[i][j]<<' ';
		}fout<<endl;
	}
}
int main()
{
	csh();
	work();
	output();
	return 0;
}//By XPK