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A147939
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Number of permutations of floor(i*8/3), 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, 24, 96, 376, 2214, 13736, 74156, 544746, 4407076, 31351588, 285115742, 2837535876, 24004174902, 263778523564
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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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