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A135379
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Number of labeled non-planar 2-connected K_{3,3}-free toroidal graphs having n vertices.
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1
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1, 120, 10920, 989520, 99897840, 11940037200, 1737017325120, 307410206405280, 64915089945797520, 15941442348672800960, 4446392119411980978240, 1382470831306742435905920
(list; graph; refs; listen; history; internal format)
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OFFSET
| 5,2
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REFERENCES
| A. Gagarin, G. Labelle and P. Leroux, The structure of K_{3,3}-subdivision-free toriodal graphs, Discrte Math., 307 (2007), 2993-3005.
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LINKS
| A. Gagarin et al., Table of n, a(n) for n = 5..20
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CROSSREFS
| Sequence in context: A156411 A076005 A104592 * A059063 A121012 A151985
Adjacent sequences: A135376 A135377 A135378 * A135380 A135381 A135382
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KEYWORD
| nonn
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com), Dec 10 2007
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