## WallpaperWritten by Paul BourkeJanuary 1991 Images updated January 2018
The wallpaper fractal is an illustration of all the points in the following series
with seeds x _{n+1} = y_{n} - sign(x_{n}) | b x_{n} - c |^{1/2}
y _{n+1} = a - x_{n}
a = 1, b = 4, c = 60 a = 2, b = -1, c = 200 a = 10, b = -10, c = 0.01 a = 31, b = 12, c = 0.5 a = 0.1, b = 0.1, c = 10 a = 10, b = 1, c = 60 a = 474.12, b = 28.43, c = 17.03 a = 8.39, b = 90.96, c = 0.25 a = 0, b = 8.01, c = 115.63 a = 0, b = 20.62, c = 362 a = 63.79, b = 0.60, c = 0.38 |