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A147893
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Number of permutations of floor(i*5/4), 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, 304, 1424, 6922, 40922, 250670, 1645304, 11152882, 92183062, 780194356, 6842821428, 61855909454
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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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