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Nice sum (Posted on 2004-08-24)

Give a closed expression for the infinite sum:

1/1 + 2/(2+3) + 3/(4+5+6) + 4/(7+8+9+10) + ...

See The Solution Submitted by Federico Kereki

Rating: 3.0000 (5 votes)

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re: Solution

| Comment 10 of 13 |

(In reply to Solution by Keith Steele)

I think there's a typo in your penultimate line.

(By the way, the sum of the first 13 terms exceeds 2.)

Posted by Nick Hobson on 2004-09-01 14:51:37

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