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A123105 Number of benzenoids with 22 hexagons, C_(2h) symmetry and containing 2n carbon atoms. 27

%I #10 Nov 16 2023 18:13:33

%S 2,32,138,510,1627,4641,12646,31360,70888,144276,261789,409747,524600,

%T 462848,232842

%N Number of benzenoids with 22 hexagons, C_(2h) symmetry and containing 2n carbon atoms.

%H G. Brinkmann, G. Caporossi and P. Hansen, <a href="https://doi.org/10.1021/ci025526c">A Survey and New Results on Computer Enumeration of Polyhex and Fusene Hydrocarbons</a>, J. Chem. Inf. Comput. Sci., vol. 43 (2003) 842-851. See Table 5 column 6 on page 847.

%F Sum_n a(n) = 2157946 = A121210(22). - _Andrey Zabolotskiy_, Nov 15 2023

%Y Cf. A122539, A121964, A122736, A123044, A121210.

%K nonn,fini,full

%O 31,1

%A _Parthasarathy Nambi_, Sep 28 2006

%E Name and offset edited by _Andrey Zabolotskiy_, Nov 15 2023

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Last modified April 24 20:08 EDT 2024. Contains 371963 sequences. (Running on oeis4.)