纵横圆是数学里面一个很有趣的问题,也可以说是一种数学游戏。所谓“纵横图”,就是把最小的 n~2个整数排成 n 行 n 列,使各行里的数加起来都等于一个常数,各列的数加起来也都等于同一个常数,每条对角线上面的数加起来也等于这个常数。纵横图的西名是“魔方”或“幻方”(Mogio square)。 Aspect is a very interesting question in mathematics. It can also be a mathematical game. The so-called “horizontal and cross-sectional” is to arrange the smallest n~2 integers into n rows and n columns, so that the numbers in each row add up to a constant, and the numbers of each column also add up to the same constant, each pair The number above the angle is also equal to this constant. The western name of the map is “magic square” or “Moga square”.