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A323919 Hexagon-rooted catafusenes (see Cyvin et al. for precise definition). 0
0, 0, 0, 1, 3, 19, 107, 543, 2709, 13246, 63918, 306345, 1461957, 6959700, 33092280 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,5

LINKS

Table of n, a(n) for n=1..15.

S. J. Cyvin, J. Brunvoll, and B. N. Cyvin, Harary-Read numbers for catafusenes: Complete classification according to symmetry, Journal of Mathematical Chemistry 9.1 (1992): 19-31 and 33-38. See Table 1.

CROSSREFS

Sequence in context: A304625 A151539 A305555 * A089164 A323290 A072950

Adjacent sequences:  A323916 A323917 A323918 * A323920 A323921 A323922

KEYWORD

nonn,more

AUTHOR

N. J. A. Sloane, Feb 09 2019

STATUS

approved

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Last modified December 2 20:25 EST 2021. Contains 349445 sequences. (Running on oeis4.)