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A151581
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Number of permutations of 1..n arranged in a circle with exactly 8 adjacent element pairs in decreasing order.
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2
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0, 9, 5020, 526240, 26441856, 862140162, 21078701112, 419567641380, 7160621079552, 108507581733075, 1496470017336660, 19127489390389332, 229712892700188480, 2619711824193741060, 28608047711740408560, 301155410573256748920, 3072652643940279427584
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OFFSET
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8,2
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LINKS
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FORMULA
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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