The equation $n(n+d) \cdots (n+(k-1)d)=by^2$ with $\omega (d)\le 6$ or $d\le 10^{10}$
Volume 129 / 2007
                    
                    
                        Acta Arithmetica 129 (2007), 249-305                    
                                        
                        MSC: Primary 11D61.                    
                                        
                        DOI: 10.4064/aa129-3-2