n阶魔方阵，就是把1-n2个连续的正整数填到一个m*n的方阵中，使得每一列的和，每一行的和，以及两个对角线的和都相等。本程序只填奇数阶的魔方阵-n-order magic square, that is, the 1-n2 consecutive filled to a positive integer m* n square in which each column and each row and, as well as two diagonal and are equal. This pr