#include<bits/stdc++.h>
using namespace std;

int main(){
	cin.tie(0),ios::sync_with_stdio(false);
	int n; cin>>n;
	vector<vector<int>>v(n,vector<int>(n,0));
	int lim=n*n,y=0,x=0,cnt=1;
	while(cnt<=lim){
		while(x<n&&v.at(y).at(x)==0&&cnt<=lim)v.at(y).at(x)=cnt,++cnt,++x;
		if(cnt<=lim)++y,--x;
		while(y<n&&v.at(y).at(x)==0&&cnt<=lim)v.at(y).at(x)=cnt,++cnt,++y;
		if(cnt<=lim)--y,--x;
		while(x>=0&&v.at(y).at(x)==0&&cnt<=lim)v.at(y).at(x)=cnt,++cnt,--x;
		if(cnt<=lim)--y,++x;
		while(y>=0&&v.at(y).at(x)==0&&cnt<=lim)v.at(y).at(x)=cnt,++cnt,--y;
		if(cnt<=lim)++y,++x;
	}
	for(int i=0;i<n;++i){
		cout<<setfill('0')<<setw(3)<<v.at(i).at(0);
		for(int j=1;j<n;++j){
			cout<<" "s<<setfill('0')<<setw(3)<<v.at(i).at(j);
		}
		cout<<"\n"s;
	}
}