|
Search: id:A121847
|
|
|
| A121847 |
|
The spiral parameter alpha for the icosahedral fullerenes C_n. |
|
+0
1
|
|
| 0, 5, 6, 15, 17, 31, 30, 33, 51, 50, 54, 77, 76, 75, 80, 107, 106, 105, 143, 142, 111
(list; graph; listen)
|
|
|
OFFSET
|
20,2
|
|
|
REFERENCES
|
P. W. Fowler and K. M. Rogers, "Spiral Codes and Goldberg Representations of Icosahedral Fullerenes and Octahedral Analogues", J. Chem. Inf. Comput. Sci., vol. 41 (2001) 108-111.
|
|
EXAMPLE
|
If n=80 then alpha is 6.
If n=500 then alpha is 54.
|
|
CROSSREFS
|
Sequence in context: A060724 A064949 A160109 this_sequence A030533 A115908 A091020
Adjacent sequences: A121844 A121845 A121846 this_sequence A121848 A121849 A121850
|
|
KEYWORD
|
nonn,uned
|
|
AUTHOR
|
Parthasarathy Nambi (PachaNambi(AT)yahoo.com), Aug 29 2006
|
|
|
Search completed in 0.002 seconds
|
