login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A323851 Polycyclic aromatic hydrocarbons (for precise definition see He and He, 1986). 3
0, 0, 0, 1, 2, 12, 51, 229, 969, 4098, 16867, 68925, 278907, 1123302, 4507640 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,5
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.
CROSSREFS
Sequence in context: A012382 A198008 A359523 * A054667 A009537 A057547
KEYWORD
nonn,more
AUTHOR
N. J. A. Sloane, Feb 09 2019
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
STATUS
approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified March 28 10:55 EDT 2024. Contains 371241 sequences. (Running on oeis4.)