# include <bits/stdc++.h>
using namespace std;
int a[45][45];
int main() {
	int N;
	cin >> N;
	int k = 1;
	int x = 1;
	int y = (N + 1) / 2;
	a[x][y] = k;
	k++;
	while (k <= N * N) {
		if (x == 1 && y != N) {
			x = N;
			y += 1;
			a[x][y] = k;
			k++;
		} else if (y == N && x != 1) {
			y = 1;
			x -= 1;
			a[x][y] = k;
			k++;
		} else if (x == 1 && y == N) {
			x += 1;
			a[x][y] = k;
			k++;
		} else {
			if (a[x - 1][y + 1] == 0) {
				x -= 1;
				y += 1;
				a[x][y] = k;
				k++;
			} else {
				x += 1;
				a[x][y] = k;
				k++;
			}
		}
	}
	for (int i = 1; i <= N; i++) {
		for (int j = 1; j <= N; j++) {
			printf("%d ", a[i][j]);
		}
		printf("\n");
	}
	return 0;
}