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A134983
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Number of ways of placing n rooks on an n X n chessboard with the topology of a Klein bottle.
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0
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1, 2, 4, 12, 40, 168, 784, 4272, 25504, 171168, 1242688, 9915072, 84714112, 783454848, 7697178880
(list; graph; refs; listen; history; internal format)
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