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A089483
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Number of configurations of the sliding block 8-puzzle that require a minimum of n moves to be reached, starting with the empty square at mid-side.
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3
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1, 3, 5, 10, 14, 28, 42, 80, 108, 202, 278, 524, 726, 1348, 1804, 3283, 4193, 7322, 8596, 13930, 14713, 21721, 19827, 25132, 18197, 18978, 9929, 7359, 2081, 878, 126, 2
(list; graph; refs; listen; history; internal format)
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