Constructed from 250 sine curves of equal amplitude but various colours, lengths, frequencies, starting positions and ending positions and following a simple deterministic set of rules, this might be a unique way to paint a fence. The choice of 250 curves was accidental but proved pleasing to me. Whilst the rules are perfectly deterministic, it is acting on a sequence of natural numbers in the range 0-9, inclusive, and in this case those numbers were the first 250 digits of Euler's number.

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