login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A123645 Number of fusenes with 25 hexagons, D_(2h) symmetry and containing n carbon atoms. 0
2, 5, 6, 10, 19, 31, 47, 62, 91, 97, 196, 226, 264, 355, 349, 274 (list; graph; refs; listen; history; text; internal format)
OFFSET

70,1

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 11 column 5 on page 850.

LINKS

Table of n, a(n) for n=70..85.

EXAMPLE

If n=70 then the number of fusenes with 25 hexagons with D_(2h) symmetry is 2.

If n=72 then the number of fusenes with 25 hexagons with D_(2h) symmetry is 5.

If n=74 then the number of fusenes with 25 hexagons with D_(2h) symmetry is 6.

If n=76 then the number of fusenes with 25 hexagons with D_(2h) symmetry is 10.

If n=100 then the number of fusenes with 25 hexagons with D_(2h) symmetry is 274.

CROSSREFS

Cf. A122539, A121964, A122736, A123044, A123106, A123105, A123104, A123142, A123289, A123288, A123287, A123286, A123285, A123284, A123277, A123209, A123205.

Sequence in context: A178761 A274037 A227975 * A057252 A057250 A248051

Adjacent sequences:  A123642 A123643 A123644 * A123646 A123647 A123648

KEYWORD

nonn

AUTHOR

Parthasarathy Nambi, Nov 14 2006

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified October 18 12:52 EDT 2018. Contains 316321 sequences. (Running on oeis4.)