Pascal's triangle taken modulo a prime, where the binomial coefficients divisible by it fall away and leave a Sierpinski gasket — Kummer's theorem drawn rather than stated, and a different fractal for every prime; the modulus steps with the spectrum so the gasket rebuilds itself in a new base.
Drawn with: a WebGL2 shader.
Reacts to and looks like: gpu, webgl2 and audio-reactive.
Family: Visualiser.
Runs in your browser. The preview above is the same program the renderer uses.