OFFSET
5,2
LINKS
A. Gagarin et al., Table of n, a(n) for n = 5..20
A. Gagarin, G. Labelle and P. Leroux, The structure of K_{3,3}-subdivision-free toroidal graphs, Discrete Math., 307 (2007), 2993-3005.
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Dec 10 2007
STATUS
approved