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A180396
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Number of permutations of 1..n with both permutation and its inverse having exactly 6 maxima
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0
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3717, 1167268, 108778518, 5265259064, 165412392895
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OFFSET
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1,11
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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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