|
| |
|
|
A123142
|
|
Number of benzenoids with 23 hexagons, C_(2v) symmetry and containing n carbon atoms.
|
|
23
| |
|
|
2, 9, 33, 38, 235, 124, 704, 435, 2283, 1437, 6954, 3628, 17864, 9528, 43798, 24237, 106293, 53593, 228216, 104754, 431864, 188701, 760883, 300925, 1212591, 373411, 1536669, 305586, 1298746, 129710, 586556
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 64,1
|
|
|
REFERENCES
| 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 6 column 7 on page 847.
|
|
|
EXAMPLE
| If n=64 then the number of benzenoids with 23 hexagons with C_(2v) symmetry is 2.
If n=65 then the number of benzenoids with 23 hexagons with C_(2v) symmetry is 9.
If n=66 then the number of benzenoids with 23 hexagons with C_(2v) symmetry is 33.
If n=67 then the number of benzenoids with 23 hexagons with C_(2v) symmetry is 38.
If n=94 then the number of benzenoids with 23 hexagons with C_(2v) symmetry is 586556.
|
|
|
CROSSREFS
| Cf. A122539, A121964, A122736, A123044, A123106, A123105, A123104.
Sequence in context: A056916 A139628 A170872 * A122097 A073400 A048498
Adjacent sequences: A123139 A123140 A123141 * A123143 A123144 A123145
|
|
|
KEYWORD
| nonn
|
|
|
AUTHOR
| Parthasarathy Nambi (PachaNambi(AT)yahoo.com), Oct 01 2006
|
| |
|
|
