Choose a "number to mod by" and then click the green flag to go. I recommend running it in turbo mode by shift-clicking on the green flag while it is running. See notes for an explanation.
Creates a Pascal triangle (see http://en.wikipedia.org/wiki/Pascal's_triangle), then mods every number produced by the given input number. Every number is then assigned a different shade, and the triangle is displayed. (This display shows it as a right triangle simply because it has been left-justified to work better on a pixellated display, but it is essentially the same as the isosceles triangle that Pascal's triangle is often depicted as.) Entering 2 as the mod input produces the Sierpinski Triangle. This is one of many ways to produce the triangle. See http://beta.scratch.mit.edu/projects/10049703 for an example of the "chaos game" method for producing the Sierpinski Triangle.
