5,2
Jerry Ray Dias, Isomer enumeration of practical benzenoids, J. Math. Chem., 44 (2008), 711-724.
Sequence in context: A111545 A070075 A124405 * A047852 A116867 A168358
Adjacent sequences: A141784 A141785 A141786 * A141788 A141789 A141790
nonn
N. J. A. Sloane (njas(AT)research.att.com), Sep 18 2008