%I
%S 1,0,0,0,16,0,20190684
%N Number of distinct (modulo rotation and reflection) n X n associative panmagic squares.
%C It is known that a(10)=0.
%C Trump estimates a(8) ~= 4.677*10^15 and a(9) ~= 1.363*10^24.
%D Gardner, M. "Magic Squares and Cubes." Ch. 17 in Time Travel and Other Mathematical Bewilderments. New York: W.H. Freeman, pp. 213225, 1988.
%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/AssociativeMagicSquare.html">Associative Magic Square</a>
%H Walter Trump, <a href="http://www.trump.de/magicsquares/howmany.html">How many magic squares are there?</a>
%Y Cf. A006052, A081262.
%K nonn,hard,more
%O 1,5
%A _Eric W. Weisstein_, Mar 14 2003
%E a(6)a(7) from Trump's website, added by _Max Alekseyev_, May 22 2008
