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A068553
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LCM{1,...,2n} / (n*binomial(2n,n)).
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3
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1, 1, 1, 3, 2, 5, 15, 7, 28, 126, 30, 165, 198, 143, 1001, 15015, 3640, 884, 7956, 1938, 19380, 203490, 49742, 572033, 980628, 240350, 3124550, 766935, 188370, 2731365, 40970475, 20160075, 4962480, 81880920, 20173560, 353037300
(list; graph; refs; listen; history; internal format)
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