This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A123140 #15 Nov 16 2023 18:15:40 %S A123140 1,3,3,6,13,19,24,35,45,79,70,108,70,169,0,103 %N A123140 Number of benzenoids with 23 hexagons, D_(2h) symmetry and containing 2n carbon atoms. %H A123140 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 6 column 5 on page 847. %F A123140 Sum_n a(n) = 748 = A121211(23). - _Andrey Zabolotskiy_, Nov 09 2023 %e A123140 If 2n=64 then the number of benzenoids with 23 hexagons with D_(2h) symmetry is 1. %e A123140 If 2n=94 then the number of benzenoids with 23 hexagons with D_(2h) symmetry is 103. %Y A123140 Cf. A121211, A122539, A121964, A122736, A123044, A123106, A123105, A123104. %K A123140 nonn,fini,full %O A123140 32,2 %A A123140 _Parthasarathy Nambi_, Oct 01 2006 %E A123140 Name and offset corrected and a(46) = 0 inserted by _Andrey Zabolotskiy_, Nov 09 2023