#include <iostream>
using namespace std;
#define MAX 30+1
int main(){
int n,map[MAX][MAX];
while (cin>>n){
int num=1;
for (int i=0;i<n;i++){
for (int j=i;j<n;j++)
map[i][j]=num++;
for (int k=i+1;k<n;k++)
map[k][i]=num++;
}
for (int i=0;i<n;i++){
for (int j=0;j<n-1;j++)
cout<<map[i][j]<<" ";
cout<<map[i][n-1]<<endl;
}
}
return 0;
}