

A014543


Toroidal crossing number of complete graph.


0



0, 0, 0, 0, 0, 0, 0, 4, 9, 23, 42, 70, 105, 154, 226, 326
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OFFSET

1,8


REFERENCES

Gardner, M. Crossing Numbers. Ch. 11 in Knotted Doughnuts and Other Mathematical Entertainments. New York: W. H. Freeman, 1986.
Guy, R. K.; Jenkyns, T.; and Schaer, J. ``Toroidal Crossing Number of Complete Graph.'' J. Comb. Th. 4, 376390, 1968.


LINKS

Table of n, a(n) for n=1..16.
Eric Weisstein's World of Mathematics, Toroidal Crossing Number.


EXAMPLE

a(7) = 0 and a(8) = 4.


CROSSREFS

Sequence in context: A060250 A138991 A138990 * A131607 A221313 A238832
Adjacent sequences: A014540 A014541 A014542 * A014544 A014545 A014546


KEYWORD

nonn,nice,more


AUTHOR

Eric W. Weisstein


STATUS

approved



