Technical data for this type of fractal : click here.

For the fractal here :
fn1=sin, fn2=sin, fn3=sin, fn4=tan
real(p1) = 0.45, imag(p1) = 4, real(p2) = 0, imag(p2) = 0, real(p3) = -0.39, imag(p3) = -0.39

Note the curious aspect of this fractal, looking like the number 8.