#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]=i+1;
		for(j=1;j<=n-i-1;j++){
			a[i][j]=a[i][j-1];
		}
		for(j=n-i;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: 1200
	User: admin
	Language: C
	Result: Accepted
	Time:9 ms
	Memory:1144 kb
****************************************************************/