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A147905
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Number of permutations of floor(i*8/5), i=0..n-1, with all sums of 2 through 4 adjacent terms respectively unique.
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0
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1, 2, 6, 16, 74, 384, 1970, 10282, 65472, 408096, 3135626, 22226326, 167840010, 1477742556, 12643496462, 132500787090
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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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