A130629 - OEIS

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A130629

Number of virtual knots of crossing number n, counting only classical crossings. Mirror images and inverses are not distinguished.

1, 0, 1, 7, 108, 2448, 90235 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,4`
	REFERENCES	`Louis Kauffman, Virtual knot theory, European J. Comb. (1999) Vol. 20, 663-690`
	LINKS	`Jeremy Green, virtual knot table.` `Louis Kauffman, Virtual knot theory, arXiv link`
	CROSSREFS	`Sequence in context: A197447 A202780 A033516 * A137648 A106977 A142480` `Adjacent sequences: A130626 A130627 A130628 * A130630 A130631 A130632`
	KEYWORD	`nonn`
	AUTHOR	`Chan-Ho Suh (suh(AT)math.ucdavis.edu), Aug 11 2007`

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Last modified February 15 09:40 EST 2012. Contains 205754 sequences.