#include <bits/stdc++.h>
using namespace std;
int main(){
	int i,j,n,a[15][15]={0};
	cin>>n;
	for(i=0;i<n;i++){
		for(j=0;j<n-i;j++){
			a[i][j]=n-i;
		}
		for(j=n-1;j>=i;j--){
			a[j][n-1-i]=n-i;
		}
	}
	for(i=0;i<n;i++){
		for(j=0;j<n;j++){
			cout<<setw(3)<<a[i][j];
		}
		cout<<endl;
	}
	
} 


/**************************************************************
	Problem: 1202
	User: 15159808820
	Language: C++
	Result: Accepted
	Time:9 ms
	Memory:2072 kb
****************************************************************/