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Search: id:A046880
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| A046880 |
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Number of isolated-pentagon (IPR) fullerenes with 2n vertices (or carbon atoms). |
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+0
3
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| 1, 0, 0, 0, 0, 1, 1, 1, 2, 5, 7, 9, 24, 19, 35, 46, 86, 134, 187, 259, 450, 616, 823, 1233, 1799, 2355, 3342, 4468, 6063, 8148, 10774, 13977, 18769, 23589, 30683, 39393, 49878, 62372, 79362, 98541, 121354, 151201, 186611, 225245, 277930, 335569
(list; graph; listen)
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OFFSET
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30,9
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COMMENT
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Enantiomorphic pairs are regarded as the same here. Cf. A086423.
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REFERENCES
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Brinkmann, Gunnar, and Dress, Andreas W. M.; A constructive enumeration of fullerenes. J. Algorithms 23 (1997), no. 2, 345-358.
P. W. Fowler and D. E. Manolopoulos, An Atlas of Fullerenes, Cambridge Univ. Press, 1995, see p. 33.
A. M. Livshits and Yu. E. Lozovik, "Cut-and-unfold approach to fullerene enumeration", J. Chem. Inf. Comput. Sci., (2004), vol. 44, 1517-1520
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LINKS
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Gunnar Brinkmann, Table of n, a(n) for n = 30..120
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CROSSREFS
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Cf. A086423, A007894, A057210.
Sequence in context: A083272 A115906 A086422 this_sequence A108118 A099477 A067934
Adjacent sequences: A046877 A046878 A046879 this_sequence A046881 A046882 A046883
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KEYWORD
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nonn,nice
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AUTHOR
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G. Brinkmann (Gunnar.Brinkmann(AT)ugent.be) and A. Dress (dress(AT)mathematik.uni-bielefeld.de)
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