Here are some truly one-of-a-kind, head-scratching examples of 4-3 patterns:
A pattern of infinite, nested spirals, each one slightly askewer than the last. Try to find the center.
See the Infinite Spiral of Doom in actionA pattern of randomly placed, distorted squares that will make you question the very fabric of reality.
Behold the Glitching GiraffeA pattern of colors that somehow, inexplicably, seems to be in reverse.
Witness the Reverse-Engineered Rainbow