#include<bits/stdc++.h>
using namespace std;
int main(){
	int n,i,j;
	cin>>n;
	int a[n][n],s=n*n;
	for(i=0;i<n;i++){
		for(j=0;j<n;j++){
			a[i][j]=s;
			s--;	
		}
	}
	for(i=0;i<n;i++){
		for(j=0;j<n;j++){
			cout<<setw(3)<<a[i][j];
		}
		cout<<endl;
	}
	return 0;
}
/**************************************************************
	Problem: 1188
	User: zouliangyin
	Language: C++
	Result: Accepted
	Time:11 ms
	Memory:2072 kb
****************************************************************/