You also get interesting simple animations when "number of holes" are near rational multiples of 256 with small denominator that's not a power of 2: 51 or 52 (1

You also get interesting simple animations when "number of holes" are near rational multiples of 256 with small denominator that's not a power of 2: 51 or 52 (1/5), 85 or 86 (1/3), 170 or 171 (2/3), 204 or 205 (4/5).