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%I
%S 1,4,23,211,2227,25824,310242,3818983,47752136
%N Number of polydominoes.
%C From Vicher's table.
%C This counts the number of polyominoes of order 2n that can be tiled by dominoes in at least one way. - _Joseph Myers_, Jun 10 2012
%H M. Keller, <a href="http://www.solitairelaboratory.com/polyenum.html">Counting Polyforms</a>
%H M. Vicher, <a href="http://www.vicher.cz/puzzle/polyforms.htm">Polyforms</a>
%H <a href="/index/Do#domino">Index entries for sequences related to dominoes</a>
%Y Cf. A056786, A213376, A213377, A213378.
%K hard,more,nonn
%O 1,2
%A _James A. Sellers_, Aug 28 2000
%E Edited by _T. D. Noe_, Apr 09 2009
%E Offset corrected and a(6)-a(9) added by _Joseph Myers_, Jun 10 2012
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