Search: id:A059713
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%I A059713
%S A059713 1,2,6,19,63,214,738,2571,9020,31806,112572,399548,1421145,5063254,
%T A059713 18062902,64505148,230547424,824547052,2950565215,10562978104
%N A059713 Number of multi-directed animals on the square lattice.
%C A059713 This class of animals is in bijection with a simple class of heaps of 
               dimers. It generalizes directed animals.
%D A059713 M. Bousquet-Melou and A. Rechnitzer, Lattice animals and heaps of dimers, 
               Discrete Math. 258 (2002), no. 1-3, 235-274.
%H A059713 M. Bousquet-Melou and A. Rechnitzer, <a href="http://www.labri.fr/Perso/
               ~bousquet/Articles/Klarner/article.ps.gz">Lattice animals and heaps 
               of dimers</a>
%F A059713 The generating function is known in closed form. Closed, but big. It 
               is proved to be non-D-finite.
%Y A059713 Directed animals: A005773.
%Y A059713 Sequence in context: A026012 A120900 A059712 this_sequence A109262 A006724 
               A057409
%Y A059713 Adjacent sequences: A059710 A059711 A059712 this_sequence A059714 A059715 
               A059716
%K A059713 nonn
%O A059713 1,2
%A A059713 Mireille Bousquet-Melou (bousquet(AT)labri.u-bordeaux.fr), Feb 08 2001

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