A122671 Number of catacondensed coronoid systems with n hexagons with a single hole.

1, 3, 15, 62, 312, 1435, 6785

Offset: 8

Author

N. J. A. Sloane, Sep 23 2006

Keywords

• nonn
• more

Links

• S. J. Cyvin et al., The simplest coronoids: hollow hexagons, Struct. Chem., 2 (1991), 555-566.

Crossrefs

Cf. A038140.

Extensions

Name clarified by Andrey Zabolotskiy, Feb 16 2023