OFFSET
5,3
LINKS
A. Gagarin et al., Table of n, a(n) for n = 5..20
A. Gagarin, G. Labelle and P. Leroux, Counting labeled projective-planar graphs without a K_{3,3}-subdivision, arXiv:math/0406140 [math.CO], 2004-2006.
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Dec 07 2007
STATUS
approved