A123105 - OEIS

A123105

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

2, 32, 138, 510, 1627, 4641, 12646, 31360, 70888, 144276, 261789, 409747, 524600, 462848, 232842

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OFFSET

31,1

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 5 column 6 on page 847.

FORMULA

Sum_n a(n) = 2157946 = A121210(22). - Andrey Zabolotskiy, Nov 15 2023

CROSSREFS

KEYWORD

nonn,fini,full

AUTHOR

EXTENSIONS

Name and offset edited by Andrey Zabolotskiy, Nov 15 2023

STATUS

approved