The $(f,g)$-inversion formula and its applications: the $(f,g)$-summation formula

The $F$-triangle of the generalised cluster complex

The $m$-colored composition poset

The $M$-triangle of generalised non-crossing partitions for the types $E_7$ and $E_8$

The $n$-Queens Problem in Higher Dimensions

The $p$-modular descent algebras

The $q$-tangent and $q$-secant numbers via continued fractions

The $r$-Bell numbers

The $X$-class and almost-increasing permutations

The $\star$-operator and Invariant Subtraction Games

The $γ$-vector of a barycentric subdivision

The (a,b,s,t)-diameter of graphs: a particular case of conditional diameter

The (strong) rainbow connection numbers of Cayley graphs of Abelian groups

The 1/3-2/3 conjecture for $N$-free ordered sets

The 2-adic valuation of plane partitions and totally symmetric partitions

The 2-Domination and 2-Bondage Numbers of Grid Graphs

The 2-log-convexity of the Apery Numbers

The 3-dimensional planar assignment problem and the number of Latin squares related to an autotopism

The 4x4 minors of a 5xn matrix are a tropical basis

The 5'-3' distance of RNA secondary structures