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A238919
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Number of self-inverse permutations p on [n] where the maximal displacement of an element equals 8.
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2
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0, 0, 0, 0, 0, 0, 0, 0, 0, 232, 1452, 6494, 25286, 90304, 307450, 1014007, 3287295, 10616111, 34460913, 112044376, 364112828, 1180542604, 3814897196, 12278519104, 39353932208, 125637022720, 399749617604, 1268585240868, 4017417046988, 12700795616136
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OFFSET
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0,10
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LINKS
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EXAMPLE
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a(9) = 232: 923456781, 923456871, 923457681, 923458761, ..., 987456321, 987465321, 987546321, 987654321.
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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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