You Plan on Constructing a Sierpinski Gasket by Starting with a Seed

You plan on constructing a Sierpinski gasket by starting with a seed triangle whose perimeter is 3360
in. The table below gives the following information where U is the number of darkened triangles at a particular step, V is the perimeter of each darkened triangle, and W is the total length of the darkened boundary of the figure (gasket) obtained in a particular step.