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A323923 Branched catafusenes (cata-condensed benzenoids) without helicenes. 7
0, 1, 7, 44, 206, 937, 3997, 16719, 68520 (list; graph; refs; listen; history; text; internal format)
OFFSET

4,3

REFERENCES

Balaban, A. T., Brunvoll, J., Cyvin, B. N., & Cyvin, S. J. (1988). Enumeration of branched catacondensed benzenoid hydrocarbons and their numbers of Kekulé structures. Tetrahedron, 44(1), 221-228. See Table 2.

LINKS

Table of n, a(n) for n=4..12.

CROSSREFS

Sequence in context: A165210 A162454 A203210 * A026116 A216237 A291388

Adjacent sequences:  A323920 A323921 A323922 * A323924 A323925 A323926

KEYWORD

nonn,more

AUTHOR

N. J. A. Sloane, Feb 09 2019

STATUS

approved

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Last modified October 19 21:28 EDT 2019. Contains 328244 sequences. (Running on oeis4.)