A121848 The spiral parameter gamma for the icosahedral fullerenes C_n.

0, 2, 11, 18, 32, 25, 44, 63, 56, 80, 104, 68, 97, 126, 155, 114, 148, 182, 131, 170, 216

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.

Links

Table of n, a(n) for n=20..40.

Example

If n=80 then gamma is 11.
If n=500 then gamma is 104.

Crossrefs

Sequence in context: A347600 A043461 A030551 * A074926 A352932 A066144

Adjacent sequences: A121845 A121846 A121847 * A121849 A121850 A121851

Keyword

nonn,uned

Author

Parthasarathy Nambi, Aug 30 2006

Status

approved