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A147894
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Number of permutations of floor(i*7/2), 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, 74, 368, 1924, 10912, 67792, 449216, 3401230, 26973896, 240069290, 2230691024, 22675693280, 239723851692
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OFFSET
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1,2
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LINKS
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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