1,3
D. Renault, The vertex-transitive TLF-planar graphs, Discrete Math., 309 (2009), 2815-2833.
Table of n, a(n) for n=1..6.
Cf. A151717.
Sequence in context: A022815 A172252 A027116 * A027918 A058195 A213770
Adjacent sequences: A151715 A151716 A151717 * A151719 A151720 A151721
nonn
N. J. A. Sloane, Jun 09 2009
approved