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%I #12 Dec 05 2014 03:04:23
%S 0,0,0,0,0,0,3,22,80,323,338,3322,3178,13590,43045,76881,48781,551137,
%T 93592,2190553,3163376,3542450,1065943,39341178,31694933
%N Number of polyominoes with n cells that tile the plane isohedrally but not by translation or by 180-degree rotation (Conway criterion).
%C A tiling is isohedral if the symmetries of the tiling act transitively on the tiles; a shape is anisohedral if it tiles the plane, but not isohedrally.
%D Branko Grünbaum and G. C. Shephard, Tilings and Patterns. W. H. Freeman, New York, 1987, Section 9.4.
%H Joseph Myers, <a href="http://www.polyomino.org.uk/mathematics/polyform-tiling/">Polyomino tiling</a>
%Y Cf. A054359, A075198, A075199, A075200, A075201, A075202, A075203, A075205, A075206, A075213, A075222.
%K hard,nonn
%O 1,7
%A _Joseph Myers_, Sep 08 2002
%E More terms from _Joseph Myers_, Nov 04 2003
%E a(24) and a(25) from _Joseph Myers_, Nov 17 2010
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