# Greetings from The On-Line Encyclopedia of Integer Sequences! http://oeis.org/

Search: id:a123140
Showing 1-1 of 1

%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

# Content is available under The OEIS End-User License Agreement: http://oeis.org/LICENSE