#include<bits/stdc++.h>
using namespace std;
int main()
{
	int i,n,t,j,a[10][10];
	cin>>n;
	t=n*n-n+1;
	for(i=0;i<n;i++){
		for(j=0;j<n;j++){
			cout<<setw(3)<<t;
			t++;
		}
		t-=2*n;
		cout<<endl;
	}
	return 0;
}

/**************************************************************
	Problem: 1185
	User: zzz
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:2072 kb
****************************************************************/