A089797 - OEIS

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A089797

Number of rational knots and links with unknotting (unlinking) number U=1.

1, 1, 1, 2, 3, 4, 6, 9, 15, 19, 30, 39, 63, 79, 126, 159, 255 (list; graph; refs; listen; history; internal format)

	OFFSET	`2,4`
	REFERENCES	`Kohn, P. (1991) Two-bridge links with unlinking number one, Proc. Amer. Math. Soc. 113, 1135-1147.`
	LINKS	`Jablan S., Ordering Knots` `Jablan S. and Sazdanovic R., LinKnot` `A. Stoimenow, Generating Functions, Fibonacci Numbers and Rational Knots`
	CROSSREFS	`Cf. A078477.` `Sequence in context: A173289 A096824 A192488 * A081237 A022159 A022161` `Adjacent sequences: A089794 A089795 A089796 * A089798 A089799 A089800`
	KEYWORD	`nonn`
	AUTHOR	`Slavik Jablan and Radmila Sazdanovic (jablans(AT)yahoo.com), Jan 09 2004`

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Last modified February 16 15:27 EST 2012. Contains 205930 sequences.