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Number of n-cell fixed line-convex polycubes in 3 dimensions.
2

%I #6 Mar 31 2012 10:28:59

%S 1,3,15,86,522,3241,20256,126520

%N Number of n-cell fixed line-convex polycubes in 3 dimensions.

%C A polycube is "line-convex" if every axis-parallel line intersects it in at most one continuous sequence of cells.

%D G. Aleksandrowicz and G. Barequet, Parallel enumeration of lattice animals, Proc. 5th Int. Frontiers of Algorithmics Workshop, Zhejiang, China, Lecture Notes in Computer Science, 6681, Springer-Verlag, 90-99, May 2011.

%Y Cf. A067675 (convex polyominoes).

%K nonn,more,hard

%O 1,2

%A _Gill Barequet_, May 26 2011