Analysis: By observing the graph, we can know that the total number of points is equal to the square of the abscissa of the lower right corner point on the X axis. When the abscissa of the lower right corner point is odd, the abscissa is a number and the ordinate is 0. When the abscissa of the point in the lower right corner is even, it ends with the point whose abscissa is 1 and whose ordinate is even minus 1. We can solve this problem according to this rule.
Adopted, please.