Dragon curve fractals

The Dragon curve fractal is a pattern that itself repeats on different scales. Adjust the magnification with the line length (1 to 20 pixels) and the repetition length can set between 21 and 217. By pressing the GO-button the fractal will be visible instantaneous. And by pressing the Animate-button a slow build-up of the fractal will be shown.

Line length =     Number = 2^        

You're gonna miss the nice fractals with that old browser.
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