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A152340
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Number of permutations of floor(i*7/4), 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, 672, 4260, 29280, 242724, 2159176, 20864844, 223065582, 2583122958, 31759066828, 413564101194, 5777537336826
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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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