#include<iostream>
using namespace std;
int arr[39][39];
int main()
{
	int n,x=1,y,k=2;
	cin>>n;
	y=n/2+1;
	arr[1][n/2+1]=1;
	for(int i=2;i<=n*n;i++)
	{
		if(x==1&&y!=n)
		{
			arr[n][y+1]=k;
			x=n;
			y++;
			k++;
		}
		if(x!=1&&y==n)
		{
			arr[x-1][1]=k;
			x--;
			y=1;
			k++;
		}
		if(x==1&&y==n)
		{
			arr[x+1][y]=k;
			x++;
			k++;
		}
		if(x!=1&&y!=n)
		{
			if(arr[x-1][y+1]==0)
			{
				arr[x-1][y+1]=k;
				x--;
				y++;
				k++;
			}
			else
			{
				arr[x+1][y]=k;
				x++;
				k++;
			}
		}
		
	}
	for(int i=1;i<=n;i++)
	{
		for(int j=1;j<=n;j++)
		{
			cout<<arr[i][j]<<" ";
		}
		cout<<endl;
	}
	return 0;
}