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A152644
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Number of permutations of floor(i*9/4), 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, 343680, 3210336, 32428512, 359501856, 4409024192, 56394389456, 777561149096, 11557514999280
(list; graph; refs; listen; history; internal format)
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