A323851 Polycyclic aromatic hydrocarbons (for precise definition see He and He, 1986).
0, 0, 0, 1, 2, 12, 51, 229, 969, 4098, 16867, 68925, 278907, 1123302, 4507640
Offset: 1
References
- N. Trinajstić, S. Nikolić, J. V. Knop, W. R. Müller and K. Szymanski, Computational Chemical Graph Theory: Characterization, Enumeration, and Generation of Chemical Structures by Computer Methods, Ellis Horwood, 1991.
Links
- A. T. Balaban, J. Brunvoll, B. N. Cyvin & S. J. Cyvin, Enumeration of branched catacondensed benzenoid hydrocarbons and their numbers of Kekulé structures Tetrahedron, 44(1) (1988), 221-228. See Table 1.
- Wenchen He and Wenjie He, Generation and enumeration of planar polycyclic aromatic hydrocarbons, Tetrahedron 42.19 (1986): 5291-5299. See Table 1, column C.
Extensions
a(13)-a(15) from Trinajstić et al. (Table 4.2, the number of cata-condensed benzenoids with h hexagons, branched) added by Andrey Zabolotskiy, Feb 08 2023