A135379 Number of labeled non-planar 2-connected K_{3,3}-free toroidal graphs having n vertices.

1, 120, 10920, 989520, 99897840, 11940037200, 1737017325120, 307410206405280, 64915089945797520, 15941442348672800960, 4446392119411980978240, 1382470831306742435905920

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

Sequence in context: A299954 A226804 A104592 * A296913 A059063 A224178

Adjacent sequences: A135376 A135377 A135378 * A135380 A135381 A135382

Keyword

nonn

Author

N. J. A. Sloane, Dec 10 2007

Status

approved