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A049344 Prime unoriented alternating links (not necessarily connected knots) with n crossings. 1
0, 1, 1, 2, 3, 8, 14, 39, 96, 297, 915, 3308, 12417, 51347, 222595, 1016975, 4799520, 23301779, 115405815 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

REFERENCES

Garoufalidis, Stavros, and Thao Vuong. "Alternating knots, planar graphs, and q-series." The Ramanujan Journal 36.3 (2015): 501-527. See (28).

LINKS

Table of n, a(n) for n=1..19.

S. R. Finch, Knots, links and tangles

S. R. Finch, Knots, links and tangles, Aug 08 2003. [Cached copy, with permission of the author]

CROSSREFS

Cf. A002864. Row sums of A059739.

Sequence in context: A201361 A129700 A197466 * A080877 A007165 A107321

Adjacent sequences:  A049341 A049342 A049343 * A049345 A049346 A049347

KEYWORD

nonn,nice,hard

AUTHOR

N. J. A. Sloane, Feb 10 2001

STATUS

approved

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Last modified July 4 15:25 EDT 2020. Contains 335448 sequences. (Running on oeis4.)