#include <cstdio>
#include <iostream>
using namespace std;
const int N = 100;
int e[N][N];
int main(){
	int n, p, q, t;
	cin >> n;
	p = 1;
	q = 2 * n + 1;
	t = n;
	for(int j = 0; j <= n; j++, p++, q--){
		for(int i = p; i <= q; i++){
			e[p][i] = t;
		}
		for(int i = p; i <= q; i++){
			e[i][q] = t;
		}
		for(int i = 2 * n - j; i >= p; i--){
			e[q][i] = t;
		}
		for(int i = 2 * n - j; i >= p + 1; i--){
			e[i][p] = t;
		}
		t--;
	}
	for(int i = 1; i <= 2 * n + 1; i++){
		for(int j = 1; j <= 2 * n + 1; j++){
			printf("%2d", e[i][j]);
		}
		printf("\n");
	}
	return 0;
}