Geodesic

Sommaire du Fascicule no. 1

Derangements and applications
Sequences realized as Parker vectors of oligomorphic permutation groups
A note on arithmetic progressions on elliptic curves
A note on rational succession rules
A common generating function for Catalan numbers and other integer sequences
Derived sequences
Objects counted by the central Delannoy numbers
The integer sequence A002620 and upper antagonistic functions

Sommaire du Fascicule no. 2

A multidimensional version of a result of Davenport-Erdős
Numerical analogues of Aronson's sequence
The number of inversions in permutations: A saddle point approach
Some formulas for the central trinomial and Motzkin numbers
Large and small gaps between consecutive Niven numbers
Integer sequences related to compositions without $2$'s
Further results on derived sequences
A sequence of binomial coefficients related to Lucas and Fibonacci numbers

Sommaire du Fascicule no. 3

On Obláth's problem
New prime gaps between $10^{15}$ and $5\times 10^{16}$
A criterion for non-automaticity of sequences
Computing Igusa's local zeta functions of univariate polynomials, and linear feedback shift registers
Binary BBP-formulae for logarithms and generalized Gaussian-Mersenne primes
How to differentiate a number
New lower bound on the number of ternary square-free words
Matrix transformations of integer sequences

Sommaire du Fascicule no. 4

A combinatorial derivation of the number of labeled forests
Counting biorders
The enumeration of simple permutations
Characterizing the sum of two cubes
An interesting lemma for regular $C$-fractions
Two game-set inequalities
On a class of Thue-Morse type sequences
On perfect totient numbers