The first question is drawing, right? Pyramid-shaped, item 8, 8 floors, 8 points for the bottom floor, and 1 point for each upper floor.

The second problem is to observe the graph. The nth item has n edges, and each edge has n points, so there are N*N points, minus the overlapping N- 1 points.

* * * has the square of n -N+ 1 points.

Hope to adopt