#include<iostream> 
#include<cstdio> 
using namespace std; 
int a[40][40]={0};
int n;
void hs(int x,int y,int k,int ll)
{
	if(x>=1&&y>=1&&x<=n&&y<=n)
	{
	if(x==1&&y!=n)
	{
		a[n][y+1]=k+1;
		hs(n,y+1,k+1,ll+1);
		return;
	}
	if(x!=1&&y==n)
	{
		a[x-1][1]=k+1;
		hs(x-1,1,k+1,ll+1);
		return;		
	}
	if(x==1&&y==n)
	{
		a[2][n]=k+1;
		hs(2,n,k+1,ll+1);
		return;
	}
	if(x!=1&&y!=n)
	{
		if(a[x-1][y+1]==0)
		{
			a[x-1][y+1]=k+1;
			hs(x-1,y+1,k+1,ll+1);
		}
		else
		{
			a[x+1][y]=k+1;
			hs(x+1,y,k+1,ll+1);
		}
		return;
	}	
	}	

}
int main()
{ 
	freopen("2015magic.in","r",stdin); 
	freopen("2015magic.out","w",stdout);
	cin>>n;
    a[1][n/2+1]=1;
	hs(1,n/2+1,1,1);
	for(int j=1;j<=n;j++)
	{
		for(int k=1;k<=n;k++)
		{
			cout<<a[j][k]<<" ";
		}
		cout<<endl;
	}
	return 0; 
}