Search: id:A038143
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%I A038143
%S A038143 0,0,0,0,0,1,5,35,200,1121
%N A038143 Hexagonal cata-condensed helicenes with n cells (non-planar cata-fused 
               benzenoid hydrocarbons).
%D A038143 J. V. Knop et al., On the total number of polyhexes, Match, No. 16 (1984), 
               119-134.
%Y A038143 Equals A002216-A038142. Cf. A018190.
%Y A038143 Sequence in context: A166149 A002737 A123008 this_sequence A024062 A002074 
               A166176
%Y A038143 Adjacent sequences: A038140 A038141 A038142 this_sequence A038144 A038145 
               A038146
%K A038143 nonn
%O A038143 1,7
%A A038143 N. J. A. Sloane (njas(AT)research.att.com).

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