4,2

J. Brunvoll, S. J. Cyvin and B. N. Cyvin, Isomer enumeration of polygonal systems..., J. Molec. Struct. (Theochem), 364 (1996), 1-13.

Sequence in context: A054417 A080507 A108049 this_sequence A083232 A089303 A164595

Adjacent sequences: A121138 A121139 A121140 this_sequence A121142 A121143 A121144

nonn

N. J. A. Sloane (njas(AT)research.att.com), Aug 13 2006