A121849 - OEIS

A121849

The spiral parameter epsilon for the icosahedral fullerenes C_n.

0, 5, 5, 11, 15, 30, 22, 30, 41, 38, 50, 75, 57, 59, 75, 91, 78, 85, 140, 112, 105

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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 the parameter epsilon is 5.

If n=500 then the parameter epsilon is 50.

CROSSREFS

Sequence in context: A356048 A101203 A141244 * A164930 A298165 A301800

Adjacent sequences: A121846 A121847 A121848 * A121850 A121851 A121852

KEYWORD

nonn,uned

AUTHOR

Parthasarathy Nambi, Aug 30 2006

STATUS

approved