MathDB
O 17

Source:

May 25, 2007

Problem Statement

Find the maximum number of pairwise disjoint sets of the form Sa,b={n2+an+b    nZ},S_{a,b}=\{n^{2}+an+b \; \vert \; n \in \mathbb{Z}\}, with a,bZa,b \in \mathbb{Z}.