Trapinski is one of the fractal formulae in Ultra Fractal. What one does with the formula determines what the fractal will look like; this one has a sort of industrial 3D look. There are many layers and masks and the coloring I used plays a big part as well.
As far as whether Trapinski is somhow related to Sierpinski, I really don't know, but the 'pinski' part sort of lends itself to that interpretation, doesn't it?