https://2.bp.blogspot.com/-miu0kwywpDg/WqfJtTE9AXI/AAAAAAAACJ8/Dlv0s5_WClwaUBnZhQCUKQnaRMP7hFTuQCLcBGAs/s320/WT_order_4_linear_area_magic_square_S96_170114.png