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A165975
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sqrt( binomial(4n,0) * binomial(4n,1) * ... * binomial(4n,2n-1) )
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0
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1, 2, 112, 261360, 27983155200, 143829595278720000, 36441048083860298170220544, 463109968103790656729135319264000000, 298869615482782118878970689211942578421760000000
(list; graph; refs; listen; history; internal format)
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