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A096471
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Number of degree-n permutations with exactly one even cycle.
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1
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1, 3, 12, 60, 345, 2415, 18480, 166320, 1596105, 17557155, 202951980, 2638375740, 35703612945, 535554194175, 8307234936000, 141222993912000, 2470641012464625, 46942179236827875, 914462992955011500
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