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A152334
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Number of permutations of floor(i*4/3), i=0..n-1, with all sums of 4 adjacent terms unique.
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0
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1, 2, 6, 24, 120, 640, 3936, 28800, 221000, 1890260, 17757658, 178522700, 1984189170, 23487665246, 293589788564, 3987487236438
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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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