#include <iostream>
#include <cstdio>
using namespace std;

int a[32][32]={0};
int n;

void solve(int x,int y,int now,int dis)
{
	if(now>n*n)return;
	if(dis==0)
	{
		if(a[x][y+1]==0)
		{
			a[x][y+1]=now;
			solve(x,y+1,now+1,0);
		}
		else solve(x,y,now,(dis+1)%4);
	}
	else if(dis==1)
	{
		if(a[x+1][y]==0)
		{
			a[x+1][y]=now;
			solve(x+1,y,now+1,dis);
		}
		else solve(x,y,now,(dis+1)%4);
	}
	else if(dis==2)
	{
		if(a[x][y-1]==0)
		{
			a[x][y-1]=now;
			solve(x,y-1,now+1,dis);
		}
		else solve(x,y,now,(dis+1)%4);
	}
	else if(dis==3)
	{
		if(a[x-1][y]==0)
		{
			a[x-1][y]=now;
			solve(x-1,y,now+1,dis);
		}
		else solve(x,y,now,(dis+1)%4);
	}
	return;
}

int main() {
	cin>>n;
	for(int i=0;i<=n+1;i++)a[0][i]=a[n+1][i]=a[i][0]=a[i][n+1]=-1;
	a[1][1]=1;
	solve(1,1,2,0);
	for(int i=1;i<=n;i++)
	{
		for(int j=1;j<=n;j++)
		{
			if(j!=1)cout<<" ";
			printf("%03d",a[i][j]);
		}
		cout<<endl;
	}
	return 0;
}