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A121142 Numbers of isomers of unbranched a-4-catapolydecagons - see Brunvoll reference for precise definition. 1
1, 1, 1, 4, 16, 100, 625, 4300, 29584, 206572, 1442401 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,4

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=0..10.

CROSSREFS

Sequence in context: A029985 A114023 A145823 * A318693 A087296 A065731

Adjacent sequences:  A121139 A121140 A121141 * A121143 A121144 A121145

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Aug 13 2006

STATUS

approved

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Last modified January 21 18:04 EST 2019. Contains 319349 sequences. (Running on oeis4.)