login
This site is supported by donations to The OEIS Foundation.

 

Logo

Many excellent designs for a new banner were submitted. We will use the best of them in rotation.

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A051768 amphichiral (-) noninvertible knots with n crossings. 1
0, 0, 0, 0, 0, 0, 0, 1, 0, 6, 0, 40, 0, 227, 1, 1361 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,10

REFERENCES

Hoste, J.; Thistlethwaite, M.; and Weeks, J. "The First 1,701,936 Knots." Math. Intell., 20, 33-48, Fall 1998.

LINKS

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

Eric Weisstein's World of Mathematics, Amphichiral Knot.

Eric Weisstein's World of Mathematics, Knot.

CROSSREFS

Sequence in context: A047762 A186977 A167316 * A169769 A191688 A051767

Adjacent sequences:  A051765 A051766 A051767 * A051769 A051770 A051771

KEYWORD

nonn,nice

AUTHOR

Eric W. Weisstein

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Superseeker | Recent | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified April 17 17:56 EDT 2014. Contains 240655 sequences.