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From: percus@acf4.UUCP (Allon G. Percus)
Newsgroups: net.math
Subject: Re: series sum
Message-ID: <5980003@acf4.UUCP>
Date: Fri, 24-Jan-86 14:46:00 EST
Article-I.D.: acf4.5980003
Posted: Fri Jan 24 14:46:00 1986
Date-Received: Sun, 26-Jan-86 20:18:04 EST
References: <2265@utcsstat.uucp>
Organization: New York University
Lines: 19

> 	Can anyone deduce the sum of the following series after n terms?
> 
> 	  1 + 3 + 6 + 10 + 15 + 21 + .....

If I am correct, 
                             n (n + 1) (n + 2)
                         S = -----------------
                                     6

should simply work.

           .
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