#include<iostream>
#include<string>

using namespace std;

int main() {
	int n, nn, i, j, k, x = 0, y = 0, d = 0, e = 0, f = 0;
	string s, ii;

	cin >> n;
	nn = n*n;

	for (i = 0; i < n-1; i++) {
		for (j = 0; j < n * 4; j++) {
			s.insert(0, "0");
		}
		s.insert(0, "\n");
	}
	for (j = 0; j < n * 4; j++) {
		s.insert(0, "0");
	}
	//0と改行で構成された文字列Ｓ

	for (i = 1; i <= n; i++) {
		if (i == 1) x = 0;
		else x += 1;
		if (i < 10) d = 2;
		else if (i < 100) d = 3;
		else d = 4;
		e = y * (n * 4 + 1) + x * 4 - d + 4;
		ii = to_string(i) + " ";
		s.replace(e, d, ii);
	}
	//1行目は例外
	while(1){
		if (i > n) {
			for (k = 0; k < n - 1 - f; k++) {
				y += 1;
				if (i < 10) d = 2;
				else if (i < 100) d = 3;
				else d = 4;
				e = y * (n * 4 + 1) + x * 4 - d + 4;
				ii = to_string(i) + " ";
				s.replace(e, d, ii);
				i++;
			}
			for (k = 0; k < n - 1 - f; k++) {
				x -= 1;
				if (i < 10) d = 2;
				else if (i < 100) d = 3;
				else d = 4;
				e = y * (n * 4 + 1) + x * 4 - d + 4;
				ii = to_string(i) + " ";
				s.replace(e, d, ii);
				i++;
			}
			if (i > nn) break;
			for (k = 0; k < n - 2 - f; k++) {
				y -= 1;
				if (i < 10) d = 2;
				else if (i < 100) d = 3;
				else d = 4;
				e = y * (n * 4 + 1) + x * 4 - d + 4;
				ii = to_string(i) + " ";
				s.replace(e, d, ii);
				i++;
			}
			for (k = 0; k < n - 2 - f; k++) {
				x += 1;
				if (i < 10) d = 2;
				else if (i < 100) d = 3;
				else d = 4;
				e = y * (n * 4 + 1) + x * 4 - d + 4;
				ii = to_string(i) + " ";
				s.replace(e, d, ii);
				i++;
			}
			if (i > nn) break;
			f += 2;
		}
	}
	cout << s << endl;
	return 0;
}