A121142 Numbers of isomers of unbranched a-4-catapolydecagons - see Brunvoll reference for precise definition.

1, 1, 1, 4, 16, 100, 625, 4300, 29584, 206572, 1442401

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