These sites discuss magic squares:
http://mathforum.org/alejandre/magic.square.html
http://mathworld.wolfram.com/MagicSquare.html
Lo Shu magic square:
http://mathforum.org/alejandre/magic.square/loshu.html
These sites discuss magic squares:
http://mathforum.org/alejandre/magic.square.html
http://mathworld.wolfram.com/MagicSquare.html
Lo Shu magic square:
http://mathforum.org/alejandre/magic.square/loshu.html