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A121102 Catapolyoctagons (see Cyvin et al. for precise definition). 0
0, 0, 0, 4, 24, 144, 744, 3844, 19344, 97344 (list; graph; refs; listen; history; internal format)
OFFSET

1,4

REFERENCES

S. J. Cyvin et al., Enumeration of tree-like octagonal systems: catapolyoctagons, ACH Models in Chem. 134 (1997), 55-70.

CROSSREFS

Sequence in context: A005319 A155119 A114169 * A067411 A045915 A052609

Adjacent sequences:  A121099 A121100 A121101 * A121103 A121104 A121105

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com), Aug 11 2006

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Last modified February 17 18:34 EST 2012. Contains 206074 sequences.