A014543 - OEIS

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A014543

Toroidal crossing number of complete graph.

0

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

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,8

REFERENCES

Martin Gardner, Crossing Numbers. Ch. 11 in Knotted Doughnuts and Other Mathematical Entertainments. New York: W. H. Freeman, 1986.

LINKS

Table of n, a(n) for n=1..16.

Richard K. Guy, Tom Jenkyns, and Jonathan Schaer, Toroidal Crossing Number of Complete Graphw/a>, J. Comb. Th. 4, 376-390, 1968.

Eric Weisstein's World of Mathematics, Toroidal Crossing Number.

EXAMPLE

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

CROSSREFS

Sequence in context: A138991 A361002 A138990 * A343676 A131607 A221313

Adjacent sequences: A014540 A014541 A014542 * A014544 A014545 A014546

KEYWORD

nonn,nice,more

AUTHOR

Eric W. Weisstein

STATUS

approved