1,3
Table of n, a(n) for n=1..6.
J. Morris et al., Balanced Cayley graphs and balanced planar graphs, Discrete Math., 310 (2010), 3228-3235.
Sequence in context: A121452 A249165 A304598 * A235385 A144055 A012150
Adjacent sequences: A171753 A171754 A171755 * A171757 A171758 A171759
nonn,more
N. J. A. Sloane, Oct 08 2010
approved