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.
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Aug 13 2006
STATUS
approved