Lemmus's Lopsided Spiral:

This space curve was produced using the following Maple commands:

> x:=t*cos(t);
> y:=t^2*sin(t);
> z:=t^3;

                            x := t cos(t)


                                  2
                            y := t  sin(t)


                                     3
                               z := t

> with(plots):
> spacecurve([x,y,z],t=-12*Pi..20*Pi,numpoints=1000,
>   axes='BOXED',thickness=2);