%N Number of nonsquare simple imperfect squared rectangles of order n up to symmetry.
%C A squared rectangle is a rectangle dissected into a finite number, two or more, of squares. If no two of these squares have the same size the squared rectangle is perfect. A squared rectangle is simple if it does not contain a smaller squared rectangle. The order of a squared rectangle is the number of constituent squares.
%D See A002881 and A006983.
%H Stuart E. Anderson, <a href="http://www.squaring.net/sq/sr/sisr/sisr.html">Simple Imperfect Squared Rectangles, orders 9 to 24</a>
%Y Cf. A002881, A006983, A002962, A002839.
%A _Stuart E Anderson_, Dec 06 2012