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ghais/gist:4261968

Created December 11, 2012 20:43
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gistfile1.txt
Generate a sequence of N characters, chosen from an alphabet of three elements (e.g., 1, 2, 3), such that no two immediately adjacent subsequences are equal.
For instance, the sequence of length N = 5 with the characters “12321″ is acceptable, but neither “12323″ nor “12123″ are.
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