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A130629
Number of virtual knots of crossing number n, counting only classical crossings. Mirror images and inverses are not distinguished.
0
1, 0, 1, 7, 108, 2448, 90235
(list; graph; refs; listen; history; text; internal format)
OFFSET
0,4
LINKS
Table of n, a(n) for n=0..6.
Jeremy Green, virtual knot table.
Louis Kauffman, Virtual knot theory, arXiv:math/9811028 [math.GT], 1998-2006.
Louis Kauffman, Virtual knot theory, European J. Comb. (1999) Vol. 20, 663-690.
CROSSREFS
Sequence in context: A297804 A218819 A033516 * A137648 A106977 A142480
Adjacent sequences: A130626 A130627 A130628 * A130630 A130631 A130632
KEYWORD
nonn,more
AUTHOR
Chan-Ho Suh (suh(AT)math.ucdavis.edu), Aug 11 2007
STATUS
approved

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Last modified November 7 00:48 EST 2024. Contains 377523 sequences.
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