<image>(2010 • Xicheng District mock exam) In the plane Cartesian coordinate system, we define a square with side length 1 and vertices with integer coordinates as a unit grid square. As shown in the figure, the coordinates of the four vertices of rhombus ABCD are (-8,0), (0,4), (8,0), (0,-4). The number of unit grid squares that rhombus ABCD can cover is ___; If the coordinates of the four vertices of rhombus A_{n}B_{n}C_{n}D_{n} are (-2n,0), (0,n), (2n,0), (0,-n) (where n is a positive integer), then the number of unit grid squares that rhombus A_{n}B_{n}C_{n}D_{n} can cover is ___ (expressed as a formula containing n).
