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A147927
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Number of permutations of floor(i*6/5), i=0..n-1, with all sums of two and three adjacent terms respectively unique.
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0
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1, 2, 6, 16, 54, 260, 1236, 6360, 34730, 192782, 1393166, 9882056, 75731318, 596396100, 4939024062, 49565770888
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