A172486 Number of prime knots up to nine crossings with determinant 2n+1 and signature 6.

0, 1, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1

Offset

0

Comments

Adapted from Figure 6.6. The prime knots up to nine crossings separated by signature and determinant, p. 146, Cromwell. Fourth column of A172184. The fifth column of that table has only one entry, determinant = 9, signature = 8, knot is 9_1.

Links

Table of n, a(n) for n=0..19.

Example

a(1) = 1 because the only prime knot with determinant 2*1+1=3 and s=6 is 8_19.
a(3) = 1 because the only prime knot with determinant 2*3+1=7 and s=6 is 7_1

Crossrefs

A002863, A172184, A172293, A172441, 172444.

Sequence in context: A255817 A071674 A179829 * A288223 A353811 A116865

Adjacent sequences: A172483 A172484 A172485 * A172487 A172488 A172489

Keyword

nonn,fini,full

Author

Jonathan Vos Post, Nov 20 2010

Status

approved