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A123284 Number of polyhexes with 24 hexagons, C_(2v) symmetry and containing n carbon atoms. 14
2, 34, 37, 173, 155, 657, 482, 2206, 1334, 6510, 3315, 18208, 7804, 47329, 16914, 114779, 33879, 258280, 60786, 532865, 98070, 987689, 137195, 1641862, 166882, 2358366, 146898, 2723100, 77267, 2164650, 0, 966300 (list; graph; refs; listen; history; text; internal format)
OFFSET
67,1
COMMENTS
a(98) = 966300 is the last nonzero term. Sum(a(n)) = 12574028 = A120991(24). - Markus Voege, Jan 23 2014
LINKS
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 7 on page 848.
EXAMPLE
If n=67 then the number of polyhexes with 24 hexagons with C_(2v) symmetry is 2.
If n=68 then the number of polyhexes with 24 hexagons with C_(2v) symmetry is 34.
If n=69 then the number of polyhexes with 24 hexagons with C_(2v) symmetry is 37.
If n=70 then the number of polyhexes with 24 hexagons with C_(2v) symmetry is 173.
CROSSREFS
Sequence in context: A232591 A098869 A131544 * A123606 A062864 A249487
KEYWORD
nonn,fini
AUTHOR
Parthasarathy Nambi, Oct 10 2006
EXTENSIONS
Series corrected a(97)=0 and a(98)=966300; keyword 'fini' by Markus Voege, Jan 23 2014
STATUS
approved

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Last modified May 29 04:26 EDT 2024. Contains 372921 sequences. (Running on oeis4.)