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A198481
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Square root of the largest square dividing ((2n-1)!)^(2n-3).
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2
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OFFSET
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1,3
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COMMENTS
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For the complementary squarefree parts see A197880.
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LINKS
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FORMULA
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MAPLE
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a := 1 ;
for pf in ifactors(n)[2] do
p := op(1, pf) ;
e := op(2, pf) ;
a := a*p^(floor(e/2)) ;
end do:
a ;
end proc:
end proc:
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MATHEMATICA
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aa = {}; data = Table[kk = Sqrt[(n!)^(n - 2)], {n, 1, 100, 2}]; sp = data /. Sqrt[_] -> 1; sfp = data/sp; sp
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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