si = a,-a,…; a = -0.716
Center: M1.1.00 (for critical point 0); Zoom = 2
Start: z0 = 
Wondering about the other critical point? Here is a look at the same area, starting the iteration with one of the other critical points. Zoom is reduced by a factor of 1000, otherwise the picture would be solid white. The previous two pictures are fully contained in the period two bulb. If you go back to Sequence Fractals Part II #19, you can see small portions of the valley between period two and the cardioid in this picture on the right edges of the main shape in the earlier picture.