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A323922 Nonisomorphic catafusenes with symmetry C_s. 0
0, 0, 0, 1, 5, 23, 98, 393, 1600, 6486, 26694, 110818, 465890, 1978032, 8481860, 36681383, 159894915, 701898184, 3100972840, 13779678410, 61557361263, 276326335318, 1245934013926, 5640863040825, 25635343582986 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,5

LINKS

Table of n, a(n) for n=1..25.

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 pages 30 and 38.

CROSSREFS

Sequence in context: A140529 A055489 A109765 * A119012 A215038 A084615

Adjacent sequences:  A323919 A323920 A323921 * A323923 A323924 A323925

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Feb 09 2019

STATUS

approved

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Last modified October 17 19:24 EDT 2019. Contains 328127 sequences. (Running on oeis4.)