%I A075208
%S A075208 0,0,0,0,0,0,1,1,14,30,88,929,989,3859,16557,35017,46506,256901,256721,
%T A075208 1286189,2306003
%N A075208 Number of polyhexes with n cells that tile the plane by translation but 
               not by 180-degree rotation (Conway criterion).
%D A075208 Branko Gruenbaum and G. C. Shephard, Tilings and Patterns. W. H. Freeman, 
               New York, 1987, Section 9.4.
%H A075208 Joseph Myers, <a href="http://www.srcf.ucam.org/~jsm28/tiling/">Polyhex 
               tiling</a>
%Y A075208 Cf. A070766, A075207, A075209, A075210, A075211, A075212, A075213, A075214, 
               A075215, A075199, A075217.
%Y A075208 Sequence in context: A027575 A104776 A101960 this_sequence A015222 A054103 
               A161454
%Y A075208 Adjacent sequences: A075205 A075206 A075207 this_sequence A075209 A075210 
               A075211
%K A075208 hard,nonn
%O A075208 1,9
%A A075208 Joseph Myers (jsm(AT)polyomino.org.uk), Sep 08 2002
%E A075208 More terms from Joseph Myers (jsm(AT)polyomino.org.uk), Nov 08 2003
%E A075208 More terms from Herman Jamke (hermanjamke(AT)fastmail.fm), May 05 2007