Open sx349 opened 2 years ago
https://pe-cn.github.io/804/
Problem 804 Counting Binary Quadratic RepresentationsLet $g(n)$ denote the number of ways a positive integer $n$ can be represented in the form:$$x^2+xy+41y^2$$where $x$ and $y$ are integers. For exa
https://pe-cn.github.io/804/
Problem 804 Counting Binary Quadratic RepresentationsLet $g(n)$ denote the number of ways a positive integer $n$ can be represented in the form:$$x^2+xy+41y^2$$where $x$ and $y$ are integers. For exa