Geodesic

Volume 13 (2010) no. 3

Sommaire

Some remarks on differentiable sequences and recursivity
Some arithmetic functions involving exponential divisors
A generalization of the question of Sierpiński on geometric progressions
On $q$-analogs of recursions for the number of involutions and prime order elements in symmetric groups
Variations on Euclid's formula for perfect numbers
Some recurrence relations for Cauchy numbers of the first kind
Finite topologies and partitions
$m$-partition boards and poly-Stirling numbers