#include <stdio.h>
int main()
{
	int N;
	int square[40][40];
	int x = 1;
	int i;
	scanf("%d", &N);
	int y = (N + 1) / 2;
	square[x][y] = 1;
	for (i = 2; i <= N * N; i++)
	{
		if (x == 1 && y != N)
		{
			square[N][y + 1] = i;
			x = N;
			y += 1;
			continue;
		}
		else if (y == N && x != 1)
		{
			square[x - 1][1] = i;
			x -= 1;
			y = 1;
			continue;
		}
		else if(x==1&&y==N)
		{
			square[x + 1][y] = i;
			x += 1;
			continue;
		}
		else if (x != 1 && y != N)
		{
			square[x - 1][y + 1] = i;
			x -= 1;
			y += 1;			
			continue;
		}
		else
		{
			square[x + 1][y] = i;
			x += 1;
			continue;
		}
	}
	for (int m = 1; m <= N; m++)
	{
		for (int k = 1; k <= N; k++)
		{
			printf(" %d ", square[m][k]);
		}
		printf("\n");
	}
	return 0;
}