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A121849 The spiral parameter epsilon for the icosahedral fullerenes C_n. 0
0, 5, 5, 11, 15, 30, 22, 30, 41, 38, 50, 75, 57, 59, 75, 91, 78, 85, 140, 112, 105 (list; graph; refs; listen; history; text; 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.

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

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Last modified November 27 22:56 EST 2022. Contains 358406 sequences. (Running on oeis4.)