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A152321
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Number of permutations of floor(i*7/3), i=0..n-1, with all sums of 3 adjacent terms unique.
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0
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1, 2, 6, 24, 104, 572, 3708, 26080, 203656, 1891158, 17801198, 187809048, 2197262096, 25480703902, 331576359352, 4786283287650
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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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