5 citations · 13 across the 12 of their papers we have counts for
3 papers · 1 filter
Enumeration of some classes of words avoiding two generalized patterns of length three
Antonio Bernini, Luca Ferrari, Renzo Pinzani
The method we have applied in "A. Bernini, L. Ferrari, R. Pinzani, Enumerating permutations avoiding three Babson-Steingrimsson patterns, Ann. Comb. 9 (2005), 137--162" to count pa…
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…
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…