#include<iostream>
using namespace std;
const int N=1e2+3;
int a[N][N],h,k=1,l,hy=0,b=2,n;
int main(){
	scanf("%d",&n);
	h=n-1;
	for(int i=0;i<=n-1;i++){
		h=n-hy;
		l=1;
		for(;l!=b;){
			a[h][l]=k++;
			l++;
		}
		l--;
		for(;h!=n;){
			h++;
			a[h][l]=k++;
		}
		b++;
		hy++;
	}
	for(int i=1;i<=n;i++){
		for(int j=1;j<=n;j++)
			printf("%4d",a[i][j]);
		printf("\n");
	}
	return 0;
}