题解 | #蛇形矩阵#

n = int(input())
first_of_line = 1  # 每行第一个数
for i in range(n):  # i表示行数
    first_of_line += i
    num = n - i  # 每行有多少个数
    out = first_of_line # 输出的数
    for j in range(num):
        print(out, end=' ')
        out += i + j + 2  # 看规律总结
    print()