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A147915
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Number of permutations of floor(i*9/5), i=0..n-1, with all sums of 2 through 5 adjacent terms respectively unique.
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0
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1, 2, 6, 24, 96, 444, 2508, 13216, 74772, 490758, 3432594, 29784866, 218746780, 1711675050, 14763495624, 145575514096
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