OFFSET
8,3
LINKS
S. J. Cyvin et al., The simplest coronoids: hollow hexagons, Struct. Chem., 2 (1991), 555-566.
Johan Nilsson, Illustrations for initial terms
CROSSREFS
KEYWORD
nonn,more
AUTHOR
N. J. A. Sloane, Sep 23 2006
EXTENSIONS
a(15)-a(30) from Johan Nilsson, Aug 12 2015
STATUS
approved