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%I #23 Aug 17 2017 21:11:29
%S 18,444,11700,320640,9012060,257487624
%N Number of tilings of n interlocking sphinx tiled shape subunits.
%C The shape for this sequence attempts to find a connection between the unique geometry of the sphinx tile and a polymerization process.
%C The number of tilings of a stackable sphinx tiled shape has previously been described A287999.
%C In contrast to the stackable shape this shape is interlocking.
%C This shape has one female and three male parts.
%C The properties of this shape that inhibit different polymerizations are noted.
%C The various polymer configurations from a central nucleus are shown.
%H Craig Knecht, <a href="/A289941/a289941.png">Example for this sequence.</a>
%H Craig Knecht, <a href="/A289941/a289941_4.png">Geometry of the sphinx applied to a polymerization process.</a>
%H Craig Knecht, <a href="/A289941/a289941_6.png">Other examples of interlocking shapes.</a>
%Y Cf. A067411, A279887, A287999.
%K nonn,more
%O 1,1
%A _Craig Knecht_, Jul 15 2017
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