8,3

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

Sequence in context: A159610 A074246 A134426 this_sequence A052973 A087956 A116391

Adjacent sequences: A122669 A122670 A122671 this_sequence A122673 A122674 A122675

nonn

N. J. A. Sloane (njas(AT)research.att.com), Sep 23 2006