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A032323
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Number of aperiodic necklaces with n labeled beads of 4 colors.
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0
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4, 12, 120, 1440, 24480, 482400, 11793600, 329011200, 10567065600, 380131315200, 15220275840000, 669519696384000, 32145251314176000, 1671451069736448000, 93606882905023488000, 5616332944630087680000
(list; graph; refs; listen; history; internal format)
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