#include<stdio.h>
int main(){
	int n,i,j;
	scanf("%d",&n);
	int a[n][n];
	for(i=0;i<n;i++){
		a[i][0]=n-i;
		for(j=1;j<=i;j++){
			a[i][j]=a[i][j-1]+1;
		}
		for(j=i+1;j<n;j++){
			a[i][j]=a[i][j-1]-1;
			
		}
	}
	for(i=0;i<n;i++){
		for(j=0;j<n;j++){
			printf("%3d",a[i][j]);
		}
		printf("\n");
	} 
return 0;
} 








/**************************************************************
	Problem: 1195
	User: admin
	Language: C
	Result: Accepted
	Time:10 ms
	Memory:1144 kb
****************************************************************/