2 problems

Let $b$ and $c$ be non-zero integers such that $3\nmid bc$. For a sequence … let $D_{\operatorname{qr}}(n)$ denote its discriminator, the least modulus for which the first $n$ sequ…

Let $q\ge 5$ be a prime and put … Define the Browkin–Sălăjan sequence by … for $j\ge 1$. For $n\ge 1$, let $D_q(n)$ be the smallest positive integer $m$ such that…