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A123140 Number of benzenoids with 23 hexagons, D_(2h) symmetry and containing n carbon atoms. 0
1, 3, 3, 6, 13, 19, 24, 35, 45, 79, 70, 108, 70, 169, 103 (list; graph; refs; listen; history; text; internal format)
OFFSET

64,2

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) 842-851. See Table 6 column 5 on page 847.

LINKS

Table of n, a(n) for n=64..78.

EXAMPLE

If n=64 then the number of benzenoids with 23 hexagons with D_(2h) symmetry is 1.

If n=66 then the number of benzenoids with 23 hexagons with D_(2h) symmetry is 3.

If n=68 then the number of benzenoids with 23 hexagons with D_(2h) symmetry is 3.

If n=70 then the number of benzenoids with 23 hexagons with D_(2h) symmetry is 6.

If n=94 then the number of benzenoids with 23 hexagons with D_(2h) symmetry is 103.

CROSSREFS

Cf. A122539, A121964, A122736, A123044, A123106, A123105, A123104.

Sequence in context: A168073 A231829 A287151 * A123289 A096572 A318540

Adjacent sequences:  A123137 A123138 A123139 * A123141 A123142 A123143

KEYWORD

nonn

AUTHOR

Parthasarathy Nambi, Oct 01 2006

STATUS

approved

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Last modified August 8 12:30 EDT 2022. Contains 356009 sequences. (Running on oeis4.)