Geodesic

Volume 8 (2005) no. 2

Sommaire

On divisibility of Narayana numbers by primes
Counting unlabelled topologies and transitive relations
The Fibonacci number of a grid graph and a new class of integer sequences
Pattern avoidance in matrices
On the density of languages representing finite set partitions
A combinatorial interpretation of the numbers $6(2n)!/n!(n+2)!$
Hyper-sums of powers of integers and the Akiyama-Tanigawa matrix
Elliptic curves and continued fractions