#include<bits/stdc++.h>
using namespace std;
int main(){
	int n,i,j,c=1,a[10][10]={0};
	cin>>n;
	for(i=0;i<n;i++){
		for(j=1;j<=n-i;j++){
			a[j][j+i]=c;
			a[j+i][j]=c;
			c++;
		}
	}
	for(i=1;i<=n;i++){
		for(j=1;j<=n;j++){
			cout<<setw(5)<<a[i][j];
		}
		cout<<endl;
	}
} 
/**************************************************************
	Problem: 1404
	User: linmiaoling
	Language: C++
	Result: Accepted
	Time:17 ms
	Memory:2072 kb
****************************************************************/