[seqfan] Re: : The alternating sum in A196020

Paul D Hanna pauldhanna at juno.com
Mon Nov 18 00:23:25 CET 2013

Can Omar's identity: 
 Sum_{n>=1} (-1)^(n-1) * q^(n*(n+1)/2) * (1+q^n) / (1-q^n)^2  =  Sum_{n>=1} sigma(n)*q^n  
be shown to be equivalent to a known q-series identity? 

---------- Original Message ----------
From: "Omar E. Pol" <info at polprimos.com>
To: seqfan at list.seqfan.eu
Subject: [seqfan] : The alternating sum in A196020
Date: Sat, 16 Nov 2013 14:10:11 -0300

Dear Professors,

The entry A196020 contains a conjecture:
It appears that the alternating sum of row n equals the sum of divisors of n.
Does anybody knows how to�prove�o�disprove�this conjecture?


Best regards.

Omar E. Pol


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