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Kekulé numbers for certain benzenoids (see the Cyvin-Gutman book for details).
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%I #8 Jul 26 2019 04:24:54

%S 1,3,20,155,1315,11957,114972,1157650,12115220,131015260

%N Kekulé numbers for certain benzenoids (see the Cyvin-Gutman book for details).

%H Cyvin S.J., Gutman I. (1988) <a href="https://doi.org/10.1007/978-3-662-00892-8_11">Classes of Basic Benzenoids (III)</a>. In: Kekulé Structures in Benzenoid Hydrocarbons. Lecture Notes in Chemistry, vol 46. Springer, Berlin, Heidelberg (see p. 188)

%K nonn

%O 0,2

%A _N. J. A. Sloane_, Oct 10 2006