OFFSET
0,8
LINKS
Y. Kiriu and K. Ouchi, Various Functions of Mathematica about the Knot Theory, 2007. [dead link]
C. Livingston and A. H. Moore, KnotInfo: Table of Knot Invariants.
EXAMPLE
For n = 7, a(7)=2 because only 2 prime knots with minimal crossing number 7 are tricolorable: 7_4 and 7_7.
CROSSREFS
KEYWORD
nonn,hard,more
AUTHOR
Isaac Weiss, Henry Potts-Rubin, Jun 28 2018
EXTENSIONS
a(11)-a(13) using KnotInfo (taking the knots with determinant a multiple of 3) added by Andrey Zabolotskiy, Apr 29 2024
STATUS
approved