[obm-l] somatorio

To: obm-l@xxxxxxxxxxxxxx
Subject: [obm-l] somatorio
From: Klaus Ferraz <klausferraz@xxxxxxxxxxxx>
Date: Sat, 27 May 2006 03:41:49 +0000 (GMT)
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Calcule : sum(k=0->n)k^2*C(n,k)*5^k

gab: 5n(5n+1)6^(n-2).