document.write( "Question 1195428: Number Theory( I don't know where to put this, but since this has the symbol sigma in it, I put it here)\r
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\n" ); document.write( "\n" ); document.write( "1. (2015 Putnam) For each positive integer k, let A(k) be the number of odd divisors of k in the interval [1, \large \sqrt{2k}]]. Evaluate\r
\n" ); document.write( "\n" ); document.write( "\[ \sum_{k=1}^{\infty} (-1)^{k-1} \frac{A(k)}{k} \\r
\n" ); document.write( "\n" ); document.write( "Note: this is typed in latex, you could view it more properly here:
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Algebra.Com's Answer #827928 by ikleyn(52787)\"\" \"About 
You can put this solution on YOUR website!
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\n" ); document.write( "\n" ); document.write( "https://kskedlaya.org/putnam-archive/2015s.pdf\r
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\n" ); document.write( "\n" ); document.write( "Problem B6.\r
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