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A147921
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Number of permutations of floor(i*7/5), i=0..n-1, with all sums of two adjacent terms unique.
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0
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1, 2, 6, 24, 74, 372, 2116, 13376, 91944, 651888, 5780164, 51776784, 517517604, 5477813312, 59576133472, 755631632616
(list; graph; refs; listen; history; internal format)
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