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A147924
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Number of permutations of floor(i*9/7), i=0..n-1, with all sums of two adjacent terms unique.
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0
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1, 2, 6, 16, 74, 304, 1720, 11448, 73544, 556452, 4351440, 39758684, 380173176, 3837917536, 45346283462, 532159158036
(list; graph; refs; listen; history; internal format)
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