n = int(input())
if n == 0:
    exit()

grid = [[0 for _ in range(n)] for _ in range(n)]
current_row, current_col = 0, 0
grid[current_row][current_col] = 1
directions = [(0, 1), (1, 0), (0, -1), (-1, 0)]  # right, down, left, up
current_dir = 0  # start with right

for num in range(2, n * n + 1):
    dr, dc = directions[current_dir]
    next_row = current_row + dr
    next_col = current_col + dc

    # Check if the next cell is valid (within bounds and not filled)
    if 0 <= next_row < n and 0 <= next_col < n and grid[next_row][next_col] == 0:
        current_row, current_col = next_row, next_col
    else:
        # Change direction clockwise
        current_dir = (current_dir + 1) % 4
        dr, dc = directions[current_dir]
        current_row += dr
        current_col += dc

    grid[current_row][current_col] = num

for row in grid:
    formatted = [f"{num:03d}" for num in row]
    print(" ".join(formatted))