A135380 Number of labeled non-planar 2-connected K_{3,3}-free toroidal irreducible graphs having n vertices.

1, 0, 420, 37520, 3656520, 454406400, 67651907400, 11713973686800, 2309360318565300, 509886615053415600, 124470953623133617500, 33253861507512510664800, 9642802738009988846098800

Offset

5,3

References

A. Gagarin, G. Labelle and P. Leroux, The structure of K_{3,3}-subdivision-free toroidal graphs, Discrete Math., 307 (2007), 2993-3005.

Links

A. Gagarin et al., Table of n, a(n) for n = 5..20

Crossrefs

Sequence in context: A107510 A023911 A135340 * A035846 A223941 A360537

Adjacent sequences: A135377 A135378 A135379 * A135381 A135382 A135383

Keyword

nonn

Author

N. J. A. Sloane, Dec 10 2007

Status

approved