#include<bits/stdc++.h>
using namespace std;
int n;
int main(){
	cin>>n;
	for(int i=1;i<=n;i++){
		for(int j=1;j<=i;j++){
			cout<<" ";
		}
		for(int j=1;j<=2*n-(2*i-1);j++){
			cout<<n+1-i;
		}
		cout<<endl;
	}
	
	return 0;
}

/**************************************************************
	Problem: 1788
	User: dengyuanyan
	Language: C++
	Result: Presentation Error
****************************************************************/