1 citations · 1 across the 4 of their papers we have counts for
4 papers
Six bijections between deco polyominoes and permutations
Emeric Deutsch, Elisa Pergola, Renzo Pinzani
In this paper we establish six bijections between a particular class of polyominoes, called deco polyominoes, enumerated according to their directed height by n!, and permutations.…
On the exhaustive generation of convex permutominoes
Elisabetta Grazzini, Elisa Pergola, Maddalena Poneti
A permutomino of size n is a polyomino determined by a pair of permutations of size n+1, such that they differ in each position. In this paper, after recalling some enumerative res…
Enumerating permutations avoiding more than three Babson - Steingr\'ımsson patterns
Antonio Bernini, Elisa Pergola
Not long ago, Claesson and Mansour proposed some conjectures about the enumeration of the permutations avoiding more than three Babson - Steingr\'ımsson patterns (generalized patte…
A general exhaustive generation algorithm for Gray structures
Antonio Bernini, Elisabetta Grazzini, Elisa Pergola +1
Starting from a succession rule for Catalan numbers, we define a procedure encoding and listing the objects enumerated by these numbers such that two consecutive codes of the list…