Barnsleym3 fraktalas

z(0) = c = pixel;
jei re(z(n)) > 0 tada z(n+1) = (z(n))2 - 1
jei re(z(n)) <= 0 tada z(n+1) = (z(n))2 - 1 + re(z(n))*(re(c) + im(c))