why do odd magic squares have the same rank as their size whats special about odd magic squares? and why do even magic squares alternate
The results are below where n is the size and r is the corresponding rank of the magic square.
n = 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
r = 3 3 5 5 7 3 9 7 11 3 13 9 15 3 17 11 19 3
Thanks in advance