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A032227
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Doubles (index 2+) under "DGJ" (bracelet, element, labeled) transform.
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0
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2, 2, 12, 126, 1800, 33900, 782880, 21244650, 666080520, 23658839400, 939138631200, 41199513686100, 1979493215099400, 103374687069173520, 5830290120994138800, 353179917268637208750
(list; graph; refs; listen; history; internal format)
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