class NumList:
    def __init__(self, col_num):
        self.col_num = col_num
        self.num_dict = {}
        self.num_list = []

    def main(self):
        for i in range(1, self.col_num):  # i为当前行数
            print('  ' * (self.col_num - i), end=' ')  # 定义左侧空白
            k = (i * 2) - 1  # 每一行打印数量
            for j in range(k):

                if i >= 2:
                    if j == k - 2:  # 定义每一行倒数第二的数值大小
                        print(i - 1, sep='', end=' ')
                        self.num_list.append((i - 1))  # 记录显示的数值
                        continue
                    elif j >= 1 and j < k - 2:  # 第一行数值第一排 跟 倒数两排的数值
                        if i >= 3:
                            print(self.num_dict[str(i - 1)][j - 1] + self.num_dict[str(i - 1)][j], sep='', end=' ')
                            self.num_list.append(self.num_dict[str(i - 1)][j - 1] + self.num_dict[str(i - 1)][j])
                            continue

                print(i, sep='', end=' ')
                self.num_list.append(i)
            self.num_dict[str(i)] = self.num_list
            print()
            self.num_list = []


num = int(input("请输入显示行数:"))
main = NumList(num)
main.main()