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A147731
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Number of permutations of 0..n-1 with all sums of 2 through 2 adjacent terms squared respectively unique.
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0
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1, 2, 6, 24, 120, 624, 4560, 37440, 323520, 3167616, 34387248, 397398720, 5179836888, 69488212320, 1032953884956
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OFFSET
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1,2
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LINKS
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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