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A123277
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Number of polyhexes with 24 hexagons, C_(2h) symmetry and containing n carbon atoms.
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13
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18, 107, 427, 1490, 4590, 13298, 35971, 90268, 209337, 443940, 846043, 1440863, 2105423, 2482288, 2018188, 931601
(list; graph; refs; listen; history; internal format)
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OFFSET
| 68,1
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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 7 column 6 on page 848.
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EXAMPLE
| If n=68 then the number of polyhexes with 24 hexagons with C_(2h) symmetry is 18.
If n=70 then the number of polyhexes with 24 hexagons with C_(2h) symmetry is 107.
If n=72 then the number of polyhexes with 24 hexagons with C_(2h) symmetry is 427.
If n=74 then the number of polyhexes with 24 hexagons with C_(2h) symmetry is 1490.
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CROSSREFS
| Cf. A122539, A121964, A122736, A123044, A123106, A123105, A123104, A123142.
Sequence in context: A008528 A020881 A197339 * A123595 A002165 A008654
Adjacent sequences: A123274 A123275 A123276 * A123278 A123279 A123280
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KEYWORD
| nonn
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AUTHOR
| Parthasarathy Nambi (PachaNambi(AT)yahoo.com), Oct 10 2006
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