Eight-crossing knot with fourfold symmetry, or "Carrick mat".
AnonMoos
<p>Converted from the following vector PostScript source code:
</p>
<pre>%!
306 396 translate .92 .96 1 setrgbcolor
21 setlinewidth/z{20000 sqrt 2 div}def
z 0 100 225 135 arc 0 z neg 100 135 45 arc
z neg 0 100 45 315 arc 0 z 100 315 225 arc closepath
gsave 39 setlinewidth 0 setgray stroke grestore
stroke gsave 39 setlinewidth 0 setgray
4{0 z neg 100 145 135 arcn 13 13 rlineto stroke
z neg 0 100 238 271 arc stroke 90 rotate}repeat
grestore
4{0 z neg 100 147 135 arcn 15 15 rlineto stroke
z neg 0 100 236 273 arc stroke 90 rotate}repeat
showpage
%EOF</pre>