图1中的幻方满足 8+1+6=4+9+2 但你可能没有注意到另一种特性: 2+12+62=42+92+22 2+32+42=62+72+22 2+52+82+122=22+32+102+112 3+53+83+123=23+33+103+113 2+72+102+142=42+52+122+132 3+73+103+143=43+53+123+133 2+52+72+92=22+42+62+102 n+5n+7n+9n+12n+14n+16n+20n n+4n+6n+10n+11n+15n+17n+19n 2+82+72+142=22+42+112+132 3+83+73+143=23+43+113+133 |