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A152646
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Number of permutations of floor(i*9/7), i=0..n-1, with all sums of 7 adjacent terms unique.
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0
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1, 2, 6, 24, 120, 720, 5040, 40320, 339840, 3087648, 30271392, 324759072, 3731733312, 46734640160, 618773953544, 8801281435864
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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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