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A089474
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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 in the center.
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2
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1, 4, 8, 8, 16, 32, 60, 72, 136, 200, 376, 512, 964, 1296, 2368, 3084, 5482, 6736, 11132, 12208, 18612, 18444, 24968, 19632, 22289, 13600, 11842, 4340, 2398, 472, 148
(list; graph; refs; listen; history; internal format)
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