#include<iostream>
#include<cmath>
using namespace std;
int n,a[40][40],x,y;
int main(void){
	cin>>n;
	a[1][n/2+1]=1;
	x=1,y=n/2+1;
	for(int i=2;i<=n*n;i++)
	{
		if(x==1&&y!=n)
		{
			a[n][y+1]=i;
			x=n;
			y++;
		}
		else if(x!=1&&y==n)
		{
			a[x-1][1]=i;
			x=x-1;
			y=1;
		}
		else if(x==1&&y==n)
		{
			a[2][y]=i;
			x=2;
		}
		else if(x!=1&&y!=n){
			if(a[x-1][y+1]==0)
			{
				a[x-1][y+1]=i;
				x--,y++;
			}
			else
			{
				a[x+1][y]=i;
				x++;
			}
			continue;
		}
		
	}
	for(int i=1;i<=n;i++)
	{
		for(int j=1;j<=n;j++)
		{
			cout<<a[i][j]<<" ";
		}
		cout<<endl;
	 } 
	return 0;
}