#include<bits/stdc++.h>      
using namespace std;
int main(){
	int a[15][15]={0},n,i=0,j=0,b;
	cin>>n;
	b=n*n-n+1;
	for(i=0;i<n;i++){
		for(j=0;j<n;j++){
			a[i][j]=b;
			b++;
		}
		b=b-n*2;
	}
	for(i=0;i<n;i++){
		for(j=0;j<n;j++){
			cout<<setw(3)<<a[i][j];
		}
		cout<<endl;
	}
}
/**************************************************************
	Problem: 1185
	User: panyuchen
	Language: C++
	Result: Accepted
	Time:12 ms
	Memory:2072 kb
****************************************************************/