Triples which are $D(n)$-sets for several $n$'s

Nikola Adžaga, Andrej Dujella, Dijana Kreso +1

For a nonzero integer $n$, a set of distinct nonzero integers $\{a_1,a_2,\dots ,a_m\}$ such that $a_i{a}_j+n$ is a perfect square for all $1\le i<j\le m$, is called a Diophantine $…