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A180154
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Number of permutations of 0..(n-1) with the sum of the maximum of each adjacent pair = n*(n-1)/2 + floor((n-1)^2/8)
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0
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2, 4, 8, 36, 160, 848, 5792, 41712, 338688, 2902464, 30968064, 346316544, 4034119680, 48892557312, 707976364032
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OFFSET
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2,1
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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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