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math.CO2007
Production matrices and Riordan arrays
Emeric Deutsch, Luca Ferrari, Simone Rinaldi
We translate the concept of succession rule and the ECO method into matrix notation, introducing the concept of a production matrix. This allows us to combine our method with other…
math.CO2007
A closed formula for the number of convex permutominoes
Filippo Disanto, Andrea Frosini, Renzo Pinzani +1
In this paper we determine a closed formula for the number of convex permutominoes of size n. We reach this goal by providing a recursive generation of all convex permutominoes of…