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A030529 Number of polyhexes of class PF2. 11


%S 0,0,1,4,17,66,269

%N Number of polyhexes of class PF2.

%C See reference for precise definition.

%D S. J. Cyvin et al., Enumeration and classification of benzenoid systems 32. Normal perifusenes with two internal vertices, J. Chem. Inform. Comput. Sci., 32 (1992), 532-540.

%Y Cf. A026106, A026118, A026298, A030519, A030520, A030525, A030529, A030532, A030534.

%K nonn

%O 2,4

%A _N. J. A. Sloane_.

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Last modified September 21 19:39 EDT 2019. Contains 327279 sequences. (Running on oeis4.)