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A147909
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Number of permutations of floor(i*5/2), i=0..n-1, with all sums of 2 through 5 adjacent terms respectively unique.
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0
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1, 2, 6, 16, 74, 368, 1924, 10496, 65446, 426596, 3048508, 22901328, 189677816, 1628971852, 15211951462, 146663420606
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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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