#include<bits/stdc++.h>
using namespace std;
int main()
{
	freopen("2015magic.in","r",stdin);
	freopen("2015magic.out","w",stdout);
	int a[40][40]={0};
	int N;
	cin>>N;
	a[1][N/2+1]=1;
	int x=1,y=N/2+1;
	for(int i=2;i<=N*N;i++)
	{
		if(x==1&&y!=N)
		{
			x=N;
			y++;
			a[x][y]=i;
			continue;
		}
		if(y==N&&x!=1)
		{
			y=1;
			x--;
			a[x][y]=i;
			continue;
		}
		if(x==1&&y==N)
		{
			x++;
			a[x][y]=i;
			continue;
		}
		if(x!=1&&y!=N)
		{
			if(a[x-1][y+1]==0)
			{
				x--;
				y++;
				a[x][y]=i;
			}
			else
			{
				x++;
				a[x][y]=i;
			}
		}
	}
	for(int i=1;i<=N;i++)
	{
		for(int j=1;j<=N;j++)
	        cout<<a[i][j]<<" ";
	    cout<<endl;
	}
	    
}