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A152330
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Number of permutations of floor(i*9/7), 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, 3188, 20956, 161600, 1295136, 11618224, 116270992, 1227612062, 13832165114, 168852764168, 2197057423482
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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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