|
| |
|
|
A121847
|
|
The spiral parameter alpha for the icosahedral fullerenes C_n.
|
|
0
| |
|
|
0, 5, 6, 15, 17, 31, 30, 33, 51, 50, 54, 77, 76, 75, 80, 107, 106, 105, 143, 142, 111
(list; graph; refs; listen; history; internal format)
|
|
|
|
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: A064949 A160109 A191213 * A030533 A115908 A185876
Adjacent sequences: A121844 A121845 A121846 * A121848 A121849 A121850
|
|
|
KEYWORD
| nonn,uned
|
|
|
AUTHOR
| Parthasarathy Nambi (PachaNambi(AT)yahoo.com), Aug 29 2006
|
| |
|
|
