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A182407
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Number of ways to place k non-attacking knights on an n x n cylindrical chessboard, summed over all k >= 0.
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5
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2, 9, 34, 982, 11284, 1048768, 48027971, 23807996588, 3430123782371, 8141109957322587, 4098570575535958632, 46676507893324203092812, 77374614378004006943995980, 4352639823147918661142120756677
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OFFSET
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1,1
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LINKS
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CROSSREFS
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KEYWORD
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nonn,hard
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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