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A121983 Number of benzenoids with 21 hexagons with C_(2v) symmetry containing n carbon atoms. 0
1, 7, 12, 70, 36, 235, 167, 867, 517, 2453, 1262, 6150, 3642, 16214, 8863, 37733, 18149, 75274, 34783, 138929, 60330, 239646, 82662, 335306, 74046, 311055, 33940, 152826, 1635175 (list; graph; refs; listen; history; text; internal format)
OFFSET
59,2
REFERENCES
G. Brinkmann, G. Caporossi and P. Hansen, "A survey and new results on computer enumeration of polyhex and fusene hydrocarbons", J. Chem. Inf. Comput. Sci., vol. 43 (2003), pp. 842-851. See Table 4 column 7 on page 846.
LINKS
EXAMPLE
If n=59 then the number of benzenoids with 21 hexagons with C_(2v) symmetry is 1 which is the first term in the sequence.
If n=70 then the number of benzenoids with 21 hexagons with C_(2v) symmetry is 6150.
CROSSREFS
Sequence in context: A372734 A358782 A119179 * A177169 A275005 A298678
KEYWORD
nonn
AUTHOR
Parthasarathy Nambi, Sep 09 2006
STATUS
approved

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Last modified July 12 18:45 EDT 2024. Contains 374251 sequences. (Running on oeis4.)