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A147935
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Number of permutations of floor(i*5/3), i=0..n-1, with all sums of 2 through 4 adjacent terms respectively unique.
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1, 2, 6, 24, 96, 376, 2062, 12092, 63082, 435476, 3164992, 22053858, 185988918, 1662793672, 13930931162, 141475507468
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