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A102736
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Number of permutations of n elements without cycles whose length is a multiple of 3.
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2
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1, 2, 4, 16, 80, 400, 2800, 22400, 179200, 1792000, 19712000, 216832000, 2818816000, 39463424000, 552487936000, 8839806976000, 150276718592000, 2554704216064000, 48539380105216000, 970787602104320000
(list; graph; refs; listen; history; internal format)
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