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<p>the farthest point from (x,&nbsp;y) is (2<sup>n</sup>&nbsp;&minus;&nbsp;x&nbsp;&minus;&nbsp;1, (y&nbsp;+&nbsp;n/2)&nbsp;mod&nbsp;n).  showed that the <a href="page.php?w=Crossing_number_%28graph_theory%29">crossing number</a> of CCC<sub>n</sub> is ((1/20)&nbsp;+&nbsp;o(1))&nbsp;4<sup>n</sup>.</p>

<p>According to the <a href="page.php?w=Lov%C3%A1sz_conjecture">Lovász conjecture</a>, the cube-connected cycle graph should always contain a <a href="page.php?w=Hamiltonian_cycle">Hamiltonian cycle</a>, and this is now known to be true. More generally,</p><p>
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