An optimal 2-radius sequence over a (2p)-element alphabet for p = 5. 0, 1, 3, 0, 2, 4, 1, 3, 0, 2, 4, 1, 2, 3, 4, 0, 1, 2, 3, 4, 0, 0, 2, 2, 3, 3, 4, 4, 1,
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