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A121119 Related to enumeration of rooted catapolyoctagons (see Cyvin reference for precise definition). 0
0, 0, 0, 1, 2, 12, 24, 113, 232, 1008 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,5

REFERENCES

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

LINKS

Table of n, a(n) for n=1..10.

CROSSREFS

Sequence in context: A278407 A224923 A247086 * A226899 A052565 A176710

Adjacent sequences:  A121116 A121117 A121118 * A121120 A121121 A121122

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Aug 13, 2006

STATUS

approved

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Last modified May 25 04:50 EDT 2019. Contains 323539 sequences. (Running on oeis4.)