Clifford Attractors
Attributed to Cliff Pickover
Graphics by Paul Bourke
February 2004
See also Peter de Jong attractors
Contribution by Paul Richards including source code.

Definition
x_{n+1} = sin(a y_{n}) + c cos(a x_{n})
y_{n+1} = sin(b x_{n}) + d cos(b y_{n})
where a, b, c, d are variables that define each attractor.

a = 1.4, b = 1.6, c = 1.0, d = 0.7
a = 1.6, b = 0.6, c = 1.2, d = 1.6
a = 1.7, b = 1.7, c = 0.6, d = 1.2
a = 1.5, b = 1.8, c = 1.6, d = 0.9
a = 1.7, b = 1.3, c = 0.1, d = 1.2
a = 1.7, b = 1.8, c = 1.9, d = 0.4
a = 1.8, b = 2.0, c = 0.5, d = 0.9
