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A108070 Number of fusenes with n hexagons. 8
1, 1, 3, 7, 22, 82, 339, 1505, 7036, 33836, 166246, 829987, 4197273, 21456444, 110716585, 576027737, 3018986040, 15927330105, 84530870455, 451069339063, 2418927725532, 13030938290472, 70492771581350, 382816374644336, 2086362209298079, 11408580755666756 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

REFERENCES

Gunnar Brinkmann, Gilles Caporossi and Pierre Hansen, A constructive enumeration of fusenes and benzenoids, Journal of Algorithms 45 (2002), pp. 155-166.

Gunnar Brinkmann, Gilles Caporossi and Pierre Hansen, A survey and new results on computer enumeration of polyhex and fusene hydrocarbons, J. Chem. Inf. Comput. Sci., 43 (2003), 842-851.

LINKS

Table of n, a(n) for n=1..26.

Eric Weisstein's World of Mathematics, Fusene

CROSSREFS

Cf. A018190, A108071, A108072.

Sequence in context: A018190 A187982 A000228 * A038147 A252784 A082271

Adjacent sequences:  A108067 A108068 A108069 * A108071 A108072 A108073

KEYWORD

nonn

AUTHOR

Gunnar Brinkmann (Gunnar.Brinkmann(AT)ugent.be), Jun 05 2005

STATUS

approved

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Last modified October 15 22:07 EDT 2018. Contains 316237 sequences. (Running on oeis4.)