A121143 Numbers of isomers of unbranched a-4-catapolydecagons - see Brunvoll reference for precise definition.

1, 1, 5, 29, 213, 1545, 11431, 84037, 617831, 4529489

Offset

1,3

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=1..10.

Crossrefs

Sequence in context: A057588 A030522 A091124 * A027048 A356408 A192463

Adjacent sequences: A121140 A121141 A121142 * A121144 A121145 A121146

Keyword

nonn

Author

N. J. A. Sloane, Aug 13 2006

Status

approved