Lambda fractal

Illustration of the behavour of the series for points z₀ on the complex plane.

Each value of "a" gives a different fractal image, commonly used value is -(0.85 + 0.6 i).

a = 0.7 + 0.7 i

a = 0.7 + 0.725 i

a = 0.69 + 0.725 i