Search: id:A038141
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%I A038141
%S A038141 0,0,0,0,0,0,0,0,0,0,0,0,1,11,149,1618,15123,125764
%N A038141 Number of planar polyhexes with n cells with at least two holes, all 
               holes having size at least two.
%C A038141 Planar, proper multiple coronoid systems enumerated by area. Free systems 
               are enumerated, i.e. translations, rotations and reflections are 
               regarded as the same configuration.
%C A038141 The last term includes 4 polyhexes with three holes.
%D A038141 S. J. Cyvin, J. Brunvoll, R. S. Chen, B. N. Cyvin, F. J. Zhang, Theory 
               of Coronoid Hydrocarbons II, Lecture Notes in Chemistry 62, Springer-Verlag, 
               1994. (see table 3.2, p. 66)
%D A038141 J. V. Knop et al., Use of small computers for large computations..., 
               J. Chem. Inf. Comput Sci., 30 (1990), 159-160.
%Y A038141 Cf. A018190.
%Y A038141 Cf. A000228 (hexagonal free polyominoes), A038140 (planar single coronoids).
%Y A038141 Sequence in context: A061613 A093750 A103544 this_sequence A142083 A068646 
               A077577
%Y A038141 Adjacent sequences: A038138 A038139 A038140 this_sequence A038142 A038143 
               A038144
%K A038141 nonn
%O A038141 1,14
%A A038141 N. J. A. Sloane (njas(AT)research.att.com).
%E A038141 Edited by Markus Voege (markus.voege(AT)inria.fr), Dec 03 2003

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