A121286 Number of catacondensed hexagonal systems with n hexagons.

1, 3, 9, 26, 72, 192, 496, 1248, 3072, 7424, 17664, 41472, 96256, 221184, 503808, 1130496, 2555904, 5701632

Offset

1,2

Comments

This is the erroneous version published by Tosic et al. The correct sequence is in A072863. - R. J. Mathar, May 21 2018

Links

Table of n, a(n) for n=1..18.

Tosic R., Masulovic D., Stojmenovic I., Brunvoll J., Cyvin B. N. and Cyvin S. J., Enumeration of polyhex hydrocarbons to h = 17, J. Chem. Inf. Comput. Sci., 1995, 35, 181-187 Table 1 with an error at h=16.

Crossrefs

Sequence in context: A291410 A048470 A138237 * A072863 A054963 A291733

Adjacent sequences: A121283 A121284 A121285 * A121287 A121288 A121289

Keyword

dead

Author

Parthasarathy Nambi, Sep 06 2006

Status

approved