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Enumerating symmetric directed convex polyominoes
Authors:Emeric Deutsch
Institution:

Polytechnic University, Brooklyn, NY 11201, USA

Abstract:It is shown, both analytically and bijectively, that the number of symmetric directed convex polyominoes with semiperimeter 2n+2 is equal to the central binomial coefficient Image .
Keywords:Author Keywords: Directed convex polyomino  Bilateral Dyck paths  Central binomial coefficients
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