A121146 - OEIS

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A121146

Numbers of isomers of unbranched a-4-catapolyoctagons - see Brunvoll reference for precise definition.

1

1, 4, 16, 84, 465, 2714, 15732, 90934, 520105

(list; graph; refs; listen; history; text; internal format)

OFFSET

2,2

REFERENCES

J. Brunvoll, S. J. Cyvin and B. N. Cyvin, Isomer enumeration of polygonal systems..., J. Molec. Struct. (Theochem), 364 (1996), 1-13.

LINKS

Table of n, a(n) for n=2..10.

CROSSREFS

Sequence in context: A351816 A022564 A123010 * A134006 A366434 A090013

Adjacent sequences: A121143 A121144 A121145 * A121147 A121148 A121149

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Aug 13 2006

STATUS

approved