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by whatshisface 1544 days ago
It's binary in "fully reduced" form, what's interesting are the graphical rules for addition, multiplication and reduction.

(They correspond to things you can do with the expanded algebraic representation of a base-2 number, Sum a_k 2^k, but that's a necessary prerequisite for such a number system to work. After all, a way of writing numbers that did not ultimately correspond to the existing ways of writing numbers would be wrong.)