Wallpaper
Written by Paul Bourke
January 1991
Images updated January 2018

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
