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A323927 Polycyclic aromatic hydrocarbons (for precise definition see He and He, 1986). 0

%I

%S 0,0,1,0,1,3,9,27,119

%N Polycyclic aromatic hydrocarbons (for precise definition see He and He, 1986).

%H Wenchen He and Wenjie He, <a href="https://doi.org/10.1016/S0040-4020(01)82078-0">Generation and enumeration of planar polycyclic aromatic hydrocarbons</a>, Tetrahedron 42.19 (1986): 5291-5299. See Table 1.

%Y Cf. A003104, A323923-A323930.

%K nonn,more

%O 1,6

%A _N. J. A. Sloane_, Feb 09 2019

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Last modified October 16 15:22 EDT 2021. Contains 348042 sequences. (Running on oeis4.)