Several generating functions for second-order recurrence sequences.
Short generating functions for some semigroup algebras.
Signed words and permutations. II: The Euler-Mahonian polynomials.
Simultaneous generation of Koecher and Almkvist-Granville's Apéry-like formulae.
Simultaneous maj statistics.
Six little squares and how their numbers grow.
Solution to a combinatorial puzzle arising from Mayer's theory of cluster integrals.
Some aspects of Hankel matrices in coding theory and combinatorics.
Some asymptotic results useful in enumeration problems.
Some bijections and identities for the Catalan and Fine numbers.
Some classes of numbers and derivatives.
Some combinatorial problems, connected with product-isomorphisms of binary relations
Some combinatorial results about the operators with jumping nonlinearities
Some computational formulas for -Nörlund numbers.
Some easily derivable integer sequences.
Some equinumerous pattern-avoiding classes of permutations.
Some formulas for the central trinomial and Motzkin numbers.
Some formulas that enumerate certain partitions and graphs
Some further results on Legendre numbers.
Some generalized Fibonacci polynomials.