DLMF:1.2.E5} (Q34)

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DLMF:1.2.E5}
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    ( n 0 ) + ( n 2 ) + ( n 4 ) + + ( n ) = 2 n - 1 , binomial 𝑛 0 binomial 𝑛 2 binomial 𝑛 4 binomial 𝑛 superscript 2 𝑛 1 {\displaystyle{\displaystyle\genfrac{(}{)}{0.0pt}{}{n}{0}+\genfrac{(}{)}{0.0pt% }{}{n}{2}+\genfrac{(}{)}{0.0pt}{}{n}{4}+\dots+\genfrac{(}{)}{0.0pt}{}{n}{\ell}% =2^{n-1},}}
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    DLMF:1.2.E5}
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    ( m n ) binomial 𝑚 𝑛 {\displaystyle{\displaystyle\genfrac{(}{)}{0.0pt}{}{\NVar{m}}{\NVar{n}}}}
    C1.S2.SS1.m1addec
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    {\displaystyle{\displaystyle\ell}}
    C1.S1.XMD5.m1dec
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