Shatter, voronoi, gradient thickness of line

Hi! I need some help with my file.

I now have a line which is divided by 'divide' in segments with equal lengths between the points. I would like the distance between the points to decrease with lenghts from origo.  (ex x1=x, x2=x1*0.5, x3=x2*0,5...)

I woul also like the thickness of the line should get thinner with distance from origo (gradually). Would also work to do the line to a pipe and let that thickness decrease.

Thank you!