Lack of Divisibility of $\left(\genfrac{}{}{0ex}{}{2N}{N}\right)$ by three fixed odd primes infinitely often, through the Extension of a Result by P. Erdős, et al

Robert J Betts

We provide a way to modify and to extend a previously established inequality by P. Erdős, R. Graham and others and to answer a conjecture posed in the nineties by R. Graham, which…