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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 Table of n, a(n) for n=67..98. 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 Cf. A120991, A122539, A121964, A122736, A123044, A123106, A123105, A123104, A123142. Sequence in context: A232591 A098869 A131544 * A123606 A062864 A249487 Adjacent sequences: A123281 A123282 A123283 * A123285 A123286 A123287 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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