A121146 Numbers of isomers of unbranched a-4-catapolyoctagons - see Brunvoll reference for precise definition.

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

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